Follow Cronk Nutrients’ Classic Line Basic Feed Chart for a simple, balanced schedule using Micro, Grow, Bloom, and CalMag. Includes exact dosages, pH targets, and mixing instructions.

<h3 style=" text-decoration: none;" id="-program-overview"><strong><span style="font-size: 24px;">&#x1F331; </span></strong><strong><span style="font-size: 24px;">Program Overview</span></strong></h3><p style=" text-decoration: none;">The <strong>Classic Line Basic Feed Program</strong> is Cronk Nutrients&#x2019; most accessible schedule &#x2014; perfect for beginners or light-feeding growers.</p><p style=" text-decoration: none;">It provides complete nutrition through every growth phase using <strong>Micro, Grow, Bloom, and CalMag</strong>, ensuring balanced vegetative growth and smooth transition into flowering.</p><p style=" text-decoration: none;">This schedule is designed for <strong>photoperiod plants</strong> in <strong>soil, coco, or hydro setups</strong> and supports healthy development from seedling to harvest.</p><p style=" text-decoration: none;" id="isPasted"><strong>Measurement Units:</strong> Milliliters (mL) per Gallon</p><p style=" text-decoration: none;" id="isPasted"><br></p><h3 data-start="1566" data-end="1596" style=" text-decoration: none;" id="isPasted"><strong data-start="1573" data-end="1596"><span style="font-size: 24px;">Mixing Instructions</span></strong></h3><ol data-start="1597" data-end="1897" style=" text-decoration: none;"><li data-start="1597" data-end="1642"><p data-start="1600" data-end="1642">Begin with <strong data-start="1611" data-end="1639">clean, pH-balanced water</strong>.</p></li><li data-start="1643" data-end="1748"><p data-start="1646" data-end="1676">Add nutrients in this order:</p><ol data-start="1680" data-end="1748"><li data-start="1680" data-end="1694"><p data-start="1683" data-end="1694"><strong data-start="1683" data-end="1692">Micro</strong></p></li><li data-start="1698" data-end="1711"><p data-start="1701" data-end="1711"><strong data-start="1701" data-end="1709">Grow</strong></p></li><li data-start="1715" data-end="1729"><p data-start="1718" data-end="1729"><strong data-start="1718" data-end="1727">Bloom</strong></p></li><li data-start="1733" data-end="1748"><p data-start="1736" data-end="1748"><strong data-start="1736" data-end="1746">CalMag&#xA0;</strong><em>(not needed but recommended)</em></p></li></ol></li><li data-start="1749" data-end="1790"><p data-start="1752" data-end="1790">Stir thoroughly after each addition.</p></li><li data-start="1791" data-end="1834"><p data-start="1794" data-end="1834">Recheck and adjust pH before watering.</p></li><li data-start="1835" data-end="1897"><p data-start="1838" data-end="1897">Maintain water temperature between <strong data-start="1873" data-end="1894">68&#x2013;72&#xB0;F (20&#x2013;22&#xB0;C)</strong>.</p></li></ol><p data-start="1899" data-end="1999" style=" text-decoration: none;">&#x1F4A1; <strong data-start="1902" data-end="1910">Tip:</strong> Never mix nutrients together in concentrate form &#x2014; always dilute one at a time in water.</p><p><br></p><h2 id="classic-line-basic-feed-schedule"><strong>Classic Line Basic Feed Schedule</strong></h2><h2 data-start="2047" data-end="2085" style=" text-decoration: none;" id="isPasted"><strong data-start="2053" data-end="2085">Vegetative Stage (Weeks 1&#x2013;4)</strong></h2><div style=" text-decoration: none;"><div tabindex="-1"><table data-start="2087" data-end="2666"><thead data-start="2087" data-end="2197"><tr data-start="2087" data-end="2197"><th data-start="2087" data-end="2094" data-col-size="sm">Week</th><th data-start="2094" data-end="2109" data-col-size="sm">Growth Stage</th><th data-start="2109" data-end="2126" data-col-size="sm">Micro (mL/gal)</th><th data-start="2126" data-end="2142" data-col-size="sm">Grow (mL/gal)</th><th data-start="2142" data-end="2159" data-col-size="sm">Bloom (mL/gal)</th><th data-start="2159" data-end="2177" data-col-size="sm">CalMag (mL/gal)</th><th data-start="2177" data-end="2188" data-col-size="sm">pH Range</th><th data-start="2188" data-end="2197" data-col-size="sm">Notes</th></tr></thead><tbody data-start="2312" data-end="2666"><tr data-start="2312" data-end="2400"><td data-start="2312" data-end="2316" data-col-size="sm">1</td><td data-start="2316" data-end="2327" data-col-size="sm">Seedling</td><td data-start="2327" data-end="2334" data-col-size="sm">1.25</td><td data-start="2334" data-end="2341" data-col-size="sm">1.25</td><td data-start="2341" data-end="2348" data-col-size="sm">1.25</td><td data-start="2348" data-end="2352" data-col-size="sm">5</td><td data-start="2352" data-end="2362" data-col-size="sm">5.6&#x2013;5.9</td><td data-start="2362" data-end="2400" data-col-size="sm">Start light feeding to build roots</td></tr><tr data-start="2401" data-end="2490"><td data-start="2401" data-end="2405" data-col-size="sm">2</td><td data-start="2405" data-end="2417" data-col-size="sm">Early Veg</td><td data-start="2417" data-end="2423" data-col-size="sm">2.5</td><td data-start="2423" data-end="2429" data-col-size="sm">2.5</td><td data-start="2429" data-end="2435" data-col-size="sm">2.5</td><td data-start="2435" data-end="2439" data-col-size="sm">5</td><td data-start="2439" data-end="2449" data-col-size="sm">5.9&#x2013;6.2</td><td data-start="2449" data-end="2490" data-col-size="sm">Encourage strong root and stem growth</td></tr><tr data-start="2491" data-end="2578"><td data-start="2491" data-end="2495" data-col-size="sm">3</td><td data-start="2495" data-end="2505" data-col-size="sm">Mid Veg</td><td data-start="2505" data-end="2511" data-col-size="sm">2.5</td><td data-start="2511" data-end="2517" data-col-size="sm">2.5</td><td data-start="2517" data-end="2523" data-col-size="sm">2.5</td><td data-start="2523" data-end="2527" data-col-size="sm">5</td><td data-start="2527" data-end="2537" data-col-size="sm">5.9&#x2013;6.2</td><td data-start="2537" data-end="2578" data-col-size="sm">Maintain consistent vegetative growth</td></tr><tr data-start="2579" data-end="2666"><td data-start="2579" data-end="2583" data-col-size="sm">4</td><td data-start="2583" data-end="2594" data-col-size="sm">Late Veg</td><td data-start="2594" data-end="2600" data-col-size="sm">2.5</td><td data-start="2600" data-end="2606" data-col-size="sm">2.5</td><td data-start="2606" data-end="2612" data-col-size="sm">2.5</td><td data-start="2612" data-end="2616" data-col-size="sm">5</td><td data-start="2616" data-end="2626" data-col-size="sm">5.9&#x2013;6.2</td><td data-start="2626" data-end="2666" data-col-size="sm">Prepare plants for flower transition</td></tr></tbody></table></div><p><br></p><h2 data-start="2673" data-end="2710" style=" text-decoration: none;" id="isPasted"><strong data-start="2679" data-end="2710">Flowering Stage (Weeks 1&#x2013;9)</strong></h2><div style=" text-decoration: none;"><div tabindex="-1"><table data-start="2712" data-end="3603"><thead data-start="2712" data-end="2822"><tr data-start="2712" data-end="2822"><th data-start="2712" data-end="2719" data-col-size="sm">Week</th><th data-start="2719" data-end="2734" data-col-size="sm">Growth Stage</th><th data-start="2734" data-end="2751" data-col-size="sm">Micro (mL/gal)</th><th data-start="2751" data-end="2767" data-col-size="sm">Grow (mL/gal)</th><th data-start="2767" data-end="2784" data-col-size="sm">Bloom (mL/gal)</th><th data-start="2784" data-end="2802" data-col-size="sm">CalMag (mL/gal)</th><th data-start="2802" data-end="2813" data-col-size="sm">pH Range</th><th data-start="2813" data-end="2822" data-col-size="sm">Notes</th></tr></thead><tbody data-start="2937" data-end="3603"><tr data-start="2937" data-end="3013"><td data-start="2937" data-end="2941" data-col-size="sm">1</td><td data-start="2941" data-end="2954" data-col-size="sm">Pre-Flower</td><td data-start="2954" data-end="2958" data-col-size="sm">5</td><td data-start="2958" data-end="2962" data-col-size="sm">5</td><td data-start="2962" data-end="2966" data-col-size="sm">5</td><td data-start="2966" data-end="2970" data-col-size="sm">5</td><td data-start="2970" data-end="2980" data-col-size="sm">6.0&#x2013;6.4</td><td data-start="2980" data-end="3013" data-col-size="sm">Transition from Veg to Flower</td></tr><tr data-start="3014" data-end="3090"><td data-start="3014" data-end="3018" data-col-size="sm">2</td><td data-start="3018" data-end="3033" data-col-size="sm">Early Flower</td><td data-start="3033" data-end="3037" data-col-size="sm">5</td><td data-start="3037" data-end="3041" data-col-size="sm">5</td><td data-start="3041" data-end="3045" data-col-size="sm">5</td><td data-start="3045" data-end="3049" data-col-size="sm">5</td><td data-start="3049" data-end="3059" data-col-size="sm">6.0&#x2013;6.4</td><td data-start="3059" data-end="3090" data-col-size="sm">Initiate early flower sites</td></tr><tr data-start="3091" data-end="3175"><td data-start="3091" data-end="3095" data-col-size="sm">3</td><td data-start="3095" data-end="3110" data-col-size="sm">Early Flower</td><td data-start="3110" data-end="3114" data-col-size="sm">5</td><td data-start="3114" data-end="3118" data-col-size="sm">5</td><td data-start="3118" data-end="3124" data-col-size="sm">7.5</td><td data-start="3124" data-end="3128" data-col-size="sm">5</td><td data-start="3128" data-end="3138" data-col-size="sm">6.0&#x2013;6.4</td><td data-start="3138" data-end="3175" data-col-size="sm">Increase Bloom to support bud set</td></tr><tr data-start="3176" data-end="3267"><td data-start="3176" data-end="3180" data-col-size="sm">4</td><td data-start="3180" data-end="3193" data-col-size="sm">Mid Flower</td><td data-start="3193" data-end="3197" data-col-size="sm">5</td><td data-start="3197" data-end="3203" data-col-size="sm">2.5</td><td data-start="3203" data-end="3209" data-col-size="sm">7.5</td><td data-start="3209" data-end="3213" data-col-size="sm">5</td><td data-start="3213" data-end="3223" data-col-size="sm">6.0&#x2013;6.4</td><td data-start="3223" data-end="3267" data-col-size="sm">Shift nutrient focus to bloom production</td></tr><tr data-start="3268" data-end="3346"><td data-start="3268" data-end="3272" data-col-size="sm">5</td><td data-start="3272" data-end="3285" data-col-size="sm">Mid Flower</td><td data-start="3285" data-end="3289" data-col-size="sm">5</td><td data-start="3289" data-end="3295" data-col-size="sm">2.5</td><td data-start="3295" data-end="3301" data-col-size="sm">7.5</td><td data-start="3301" data-end="3305" data-col-size="sm">5</td><td data-start="3305" data-end="3315" data-col-size="sm">6.0&#x2013;6.4</td><td data-start="3315" data-end="3346" data-col-size="sm">Maintain full bloom feeding</td></tr><tr data-start="3347" data-end="3431"><td data-start="3347" data-end="3351" data-col-size="sm">6</td><td data-start="3351" data-end="3365" data-col-size="sm">Late Flower</td><td data-start="3365" data-end="3371" data-col-size="sm">2.5</td><td data-start="3371" data-end="3377" data-col-size="sm">2.5</td><td data-start="3377" data-end="3383" data-col-size="sm">7.5</td><td data-start="3383" data-end="3387" data-col-size="sm">5</td><td data-start="3387" data-end="3397" data-col-size="sm">6.0&#x2013;6.4</td><td data-start="3397" data-end="3431" data-col-size="sm">Begin tapering nitrogen levels</td></tr><tr data-start="3432" data-end="3523"><td data-start="3432" data-end="3436" data-col-size="sm">7</td><td data-start="3436" data-end="3450" data-col-size="sm">Late Flower</td><td data-start="3450" data-end="3454" data-col-size="sm">4</td><td data-start="3454" data-end="3460" data-col-size="sm">2.5</td><td data-start="3460" data-end="3466" data-col-size="sm">7.5</td><td data-start="3466" data-end="3470" data-col-size="sm">5</td><td data-start="3470" data-end="3480" data-col-size="sm">6.0&#x2013;6.4</td><td data-start="3480" data-end="3523" data-col-size="sm">Maintain bloom density and resin growth</td></tr><tr data-start="3524" data-end="3603"><td data-start="3524" data-end="3528" data-col-size="sm">8</td><td data-start="3528" data-end="3535" data-col-size="sm">Ripe</td><td data-start="3535" data-end="3542" data-col-size="sm">1.25</td><td data-start="3542" data-end="3549" data-col-size="sm">1.25</td><td data-start="3549" data-end="3555" data-col-size="sm">7.5</td><td data-start="3555" data-end="3559" data-col-size="sm">5</td><td data-start="3559" data-end="3569" data-col-size="sm">6.0&#x2013;6.4</td><td data-start="3569" data-end="3603" data-col-size="sm">Reduce feed before final flush</td></tr><tr><td>9</td><td>Flush</td><td>0</td><td>0</td><td>0</td><td>0</td><td>6.0&#x2013;6.4<br></td><td>Flush with clean, pH-balanced water<br></td></tr></tbody></table></div><h3 data-start="3951" data-end="3989" style=" text-decoration: none;" id><br></h3><h3 data-start="3951" data-end="3989" style=" text-decoration: none;" id="isPasted"><strong data-start="3958" data-end="3989"><span style="font-size: 24px;">Mixing Example &#x2013; 10 Gallons</span></strong></h3><p data-start="3990" data-end="4025" style=" text-decoration: none;">Multiply the rate per gallon &#xD7;10.</p><p data-start="4027" data-end="4054" style=" text-decoration: none;"><strong data-start="4027" data-end="4052">Example &#x2013; Veg Week 3:</strong></p><ul data-start="4055" data-end="4178" style=" text-decoration: none;"><li data-start="4055" data-end="4086"><p data-start="4057" data-end="4086">Micro: 2.5 &#xD7; 10 =&#xA0;<strong data-start="4075" data-end="4084">25 mL</strong></p></li><li data-start="4087" data-end="4117"><p data-start="4089" data-end="4117">Grow: 2.5 &#xD7; 10 =&#xA0;<strong data-start="4106" data-end="4115">25 mL</strong></p></li><li data-start="4118" data-end="4149"><p data-start="4120" data-end="4149">Bloom: 2.5 &#xD7; 10 =&#xA0;<strong data-start="4138" data-end="4147">25 mL</strong></p></li><li data-start="4150" data-end="4178"><p data-start="4152" data-end="4178">CalMag: 5 &#xD7; 10 =&#xA0;<strong data-start="4169" data-end="4178">50 mL</strong></p></li></ul><p data-start="4180" data-end="4210" style=" text-decoration: none;"><strong data-start="4180" data-end="4208">Example &#x2013; Flower Week 4:</strong></p><ul data-start="4211" data-end="4332" style=" text-decoration: none;"><li data-start="4211" data-end="4240"><p data-start="4213" data-end="4240">Micro: 5 &#xD7; 10 =&#xA0;<strong data-start="4229" data-end="4238">50 mL</strong></p></li><li data-start="4241" data-end="4271"><p data-start="4243" data-end="4271">Grow: 2.5 &#xD7; 10 =&#xA0;<strong data-start="4260" data-end="4269">25 mL</strong></p></li><li data-start="4272" data-end="4303"><p data-start="4274" data-end="4303">Bloom: 7.5 &#xD7; 10 =&#xA0;<strong data-start="4292" data-end="4301">75 mL</strong></p></li><li data-start="4304" data-end="4332"><p data-start="4306" data-end="4332">CalMag: 5 &#xD7; 10 =&#xA0;<strong data-start="4323" data-end="4332">50 mL</strong></p></li></ul><p><br></p><h3 data-start="4339" data-end="4368" style=" text-decoration: none;" id="isPasted"><strong data-start="4346" data-end="4368"><span style="font-size: 24px;">pH &amp; EC Guidelines</span></strong></h3><ul data-start="4369" data-end="4578" style=" text-decoration: none;"><li data-start="4369" data-end="4418"><p data-start="4371" data-end="4418"><strong data-start="4371" data-end="4392">Vegetative Stage:</strong> pH 5.8&#x2013;6.2 | EC 1.0&#x2013;1.4</p></li><li data-start="4419" data-end="4467"><p data-start="4421" data-end="4467"><strong data-start="4421" data-end="4441">Flowering Stage:</strong> pH 6.0&#x2013;6.4 | EC 1.4&#x2013;1.8</p></li><li data-start="4468" data-end="4578"><p data-start="4470" data-end="4578"><strong data-start="4470" data-end="4480">Flush:</strong> pH 6.0&#x2013;6.4 | EC 0.0&#x2013;0.3<br data-start="4504" data-end="4507">Check runoff weekly to monitor nutrient balance and avoid salt buildup.</p></li></ul><p><br></p><h3 data-start="4585" data-end="4608" style=" text-decoration: none;" id="isPasted"><strong data-start="4592" data-end="4608"><span style="font-size: 24px;">Feeding Tips</span></strong></h3><ul data-start="4609" data-end="4939" style=" text-decoration: none;"><li data-start="4609" data-end="4664"><p data-start="4611" data-end="4664">Suitable for&#xA0;<strong data-start="4624" data-end="4661">soil, coco, or hydroponic systems</strong>.</p></li><li data-start="4665" data-end="4733"><p data-start="4667" data-end="4733">Feed every watering or alternate with plain water in soil grows.</p></li><li data-start="4734" data-end="4804"><p data-start="4736" data-end="4804">Maintain consistent pH and temperature to improve nutrient uptake.</p></li><li data-start="4805" data-end="4879"><p data-start="4807" data-end="4879">Adjust feeding strength &#xB1;10&#x2013;20% based on plant size and leaf response.</p></li><li data-start="4880" data-end="4939"><p data-start="4882" data-end="4939">Reduce Grow and Micro in late flower to promote ripening.</p></li></ul><hr data-start="4941" data-end="4944" style=" text-decoration: none;"><p><span style=" text-decoration: none;" id="isPasted">The&#xA0;</span><strong data-start="5219" data-end="5252" style=" text-decoration: none;">Classic Line Basic Feed Chart</strong><span style=" text-decoration: none;">&#xA0;is a reliable, entry-level feeding program that provides your plants with all essential nutrients for healthy growth and flavorful harvests. 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Cronk Nutrients – Classic Line Basic Feed Chart Guide

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Learn how to properly mix and use the Cronk Classic 3-Part Nutrient System. Get ratios, feeding order, and usage tips for healthy, vigorous plant growth.

Mixing & Usage: Feeding with Classic Line Nutrients – Cronk Nutrients

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Choosing the Right Cronk Nutrients for Your Grow

Understanding NPK: What Those Numbers on Your Fertilizer Really Mean

Liquid Nutrients vs. Dry Nutrients: Which Is Best for Your Grow?

What Does CalMag Do for Plants?

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pH & Water Quality: Why Balance Matters

pH & Water Quality

Understanding EC & Nutrient Strength: A Grower’s Guide

EC & PPM in Organic vs Salt-Based Nutrition: What Every Grower Must Know

EC/PPM & Nutrient Strength

Understanding Grow Lights for Cannabis: A Beginner’s Guide

Growing Indoors vs. Outdoors: Which Is Best for Your Grow?

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The Science of Growing Vibrant Basil: Choosing the Right Medium, Nutrients & Microbes

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Choosing the Right Grow Medium for Cannabis: Soil, Coco, or Hydro?

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Photosynthesis & Carbohydrates: Powering Plant Growth and Fruit Quality

How Magnesium Powers Photosynthesis and Plant Growth

Unlock Your Plants’ Potential: Understanding Nitrogen, Phosphorus, and Potassium

The Science of Growing Beefsteak Tomatoes: From Seed to Harvest

The Science of Flowering Nutrition: Choosing the Best Fertilizer for Bloom Growth

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Cronk Nutrients 3-Part Base Mixing Guide: Master Feeding for Maximum Growth

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Cronk Nutrients – Autoflower Line Basic Feed Chart Guide

Cronk Nutrients – Autoflower Line Intermediate Feed Chart Guide

Cronk Nutrients – Autoflower Line Expert Feed Chart Guide

Bonnie & Clyde Mixing Guide: Autoflower Nutrients 101

Bonnie & Clyde (Autoflower Line)

Introducing PuurOrganics: A Cleaner Path to Organic Liquid Fertilizer Success

Cronk Nutrients – PuurOrganics Feed Chart Guidance

PuurOrganics

CalMag Mixing Guide: Strengthen Growth & Prevent Deficiencies

CalMag 2-0-0

How to Use a Bloom Booster to Increase Bud Size and Yield

Bud Booster 0-1-3 (Flower Enhancer)

Sticky Bandit Mixing Guide: Boost Terpenes, Flavor & Potency

Sticky Bandit 0-0-1 (Resin Enhancer)

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Feeding Charts for Cronk Nutrients Lines

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Cronk Nutrients SDS Sheets

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Grower Glossary – H

Grower Glossary – I

Grower Glossary – J

Grower Glossary – K

Grower Glossary – L

Grower Glossary – M

Grower Glossary – N

Grower Glossary – O

Grower Glossary – P

Grower Glossary – Q

Grower Glossary – R

Grower Glossary – S

Grower Glossary – T

Grower Glossary – U

Grower Glossary – V

Grower Glossary – W

Grower Glossary – X

Grower Glossary – Y

Grower Glossary – Z

Grower Terminology

What order should I mix Cronk Nutrients in?

When should I start feeding my plants Cronk Nutrients?

Can I mix all Cronk Nutrients together?

How often should I feed my plants Cronk Nutrients?

Do I need to use CalMag with Cronk Nutrients?

Which Cronk Nutrient system should I use for my grow?

Can I use Cronk Nutrients with other brands?

Can I use Cronk Nutrients in DWC or hydroponics?

Can I use Sticky Bandit and CalMag with PuurOrganics?

Is there anything else I should buy to help my plants thrive?

How can I prevent nutrient lockout when feeding my plants?

Can I use Cronk Nutrients in a drip irrigation or auto-watering system?

Can I foliar feed with Cronk Nutrients?

How do I transition from vegetative to flowering nutrients?

Should I use plain water between feedings?

Why are pH and EC important in plant growth?

Feeding & Mixing FAQ

Why are my plant leaves turning yellow?

Why are my leaves curling up or down?

My plants have brown spots on the leaves—what’s happening?

Why is my plant’s growth uneven or stunted?

Why are my buds small and airy?

My plants look pale even though I’m feeding—what’s wrong?

Why are my plants drooping after watering?

My pH keeps fluctuating — how do I fix it?

Why are my stems purple or red?

Troubleshooting & Deficiencies

How should I store Cronk Nutrients?

Can I store Cronk Nutrients in my garage or shed?

Can Cronk Nutrients go bad if not used for months?

What is the shelf life of Cronk Nutrients?

How long can I store pre-mixed Cronk Nutrient solution?

Storage & Product Safety

Is there a feed chart for Cronk Nutrients?

How do I know which Cronk Nutrients feeding chart to use?

How do I measure nutrients accurately for my grow?

What EC and PPM levels should I target with Cronk Nutrients?

How can I adjust Cronk Nutrients feed charts for smaller or larger plants?

How do I use Cronk Nutrients in coco coir vs. soil?

Do I need to flush when using Cronk Nutrients?

Can I use Cronk Nutrients with compost teas or organic boosters?

How do I convert Cronk Nutrient dosages from liters to gallons?

What do the numbers mean on the Cronk Nutrients feed charts?

Feeding Charts & Measurements

What products does Cronk Nutrients offer?

Can I use Cronk Nutrients on non-autoflowering plants?

Can I use Cronk Nutrients on any type of plant?

What do the numbers on the bottles mean?

General Product FAQ

What should I do if my package is delayed or tracking hasn’t updated?

Can I get a discount code for Cronk Nutrients?

How can I apply for a Cronk Nutrients sponsorship?

My Cronk Nutrients arrived frozen — what should I do?

How long does it take for my Cronk Nutrients order to ship?

My tracking number says “Label Created” but hasn’t updated — what does that mean?