{"id":205179,"date":"2025-03-18T15:00:00","date_gmt":"2025-03-18T13:00:00","guid":{"rendered":"https:\/\/atami.com\/blog\/uncategorized-usa\/troubleshooting-over-and-underfed-cannabis-plants\/"},"modified":"2025-09-08T16:10:37","modified_gmt":"2025-09-08T14:10:37","slug":"cannabis-overfeeding-signs-solutions","status":"publish","type":"post","link":"https:\/\/atami.com\/usa\/blog\/cultivation\/cannabis-overfeeding-signs-solutions","title":{"rendered":"Troubleshooting Cannabis Overfeeding and Nutrient Imbalance"},"content":{"rendered":"\t\t
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Cannabis plants require nutrients during their lifecycle to grow; however, cannabis over-fertilization or under-fertilization can easily occur. Cannabis plants require nutrients to become healthy and robust plants capable of growing strong roots, stems, leaves, and beautiful buds.<\/strong><\/p>\n

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In this article, I explain all you need to know about over and underfed cannabis plants, covering the signs of over-fertilizing cannabis, the signs of underfed cannabis plants, the effect on cannabis buds, the best methods to help prevent over-fertilizing and under-fertilizing cannabis, as well as provide my top tips to help you find the perfect balance between over and underfed cannabis plants.<\/strong><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Table of contents:<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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\u25cf What Does Over-Fertilized Cannabis Mean?<\/a><\/strong>
\u25cf Signs of Over-Fertilizing Cannabis<\/strong><\/a>
\u25cf Over-Fertilized Cannabis Buds<\/strong><\/a>
\u25cf Signs of Underfed Cannabis Plants<\/strong><\/a>
\u25cf Tools and Equipment to fix and prevent over-fertilization<\/strong><\/a>
\u25cf 3 Top Tips to Avoid Over-Fertilizing and Under-Fertilizing Cannabis Plants<\/strong><\/a>
\u25cf The Conclusion on Underfed and Over-Fertilized Cannabis<\/strong><\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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What Does Over-Fertilizing Cannabis Plants Mean?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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There are three nutrient groups cannabis plants need from seed until harvest, and they are the primary nutrients, the secondary nutrients, and the trace elements. When too many nutrients are applied, over-fertilization of cannabis or nutrient toxicity will occur, resulting in an overfed cannabis plant causing an imbalance in plant health. Over-fertilization is an excess of salt accumulation in the metabolism of the plants as advised by Alchimia<\/strong><\/a>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Signs of Over-Fertilizing Indoor Cannabis Plants<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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\u25cf Too much nitrogen will cause the leaves to bend or curl.
\u25cf The plants will become very dark green and dark-coloured.
\u25cf The tips of the leaves will become yellow, bronze, or brown, indicating tip burn.
\u25cf The rate of growth will become slow and can result in stunted plants.
\u25cf A cannabis plant\u2019s roots will become strained brown or dark yellow.
\u25cf Nutrient salt buildup will accumulate in the grow medium resulting in high E.C levels.
\u25cf The run-off E.C level will be greater than the E.C level of the nutrient solution<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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How Over-Fertilized Cannabis Buds Affect Quality and Smoking Experience<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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As a home grower, the goal is to try and grow the same quality buds that you would experience in a Spanish cannabis social club or Dutch coffee shop. How many nutrients your plants receive can seriously affect the smoking experience. Below are the signs cannabis buds have become over-fertilized, contain PGR nutrients<\/strong><\/a>, and what to look out for.<\/p>\n

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\u25cf The joint will not light easily, and the ember may not burn correctly.
\u25cf When inhaling, the joint feels tight and the paper will side-burn the more you smoke.
\u25cf The ash from the joint will have a charcoal black and dense characteristic.
\u25cf The aroma of the joint will have a chemical and unpleasant smell.
\u25cf Inhalation will result in a harsh taste and can cause you to dramatically cough.
\u25cf The buds may have a dark appearance and may contain small dark green leaves.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Signs Your Cannabis Plants Are Underfed or Nutrient Deficient<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Underfed cannabis simply means that the plants are not getting enough nutrition. As a beginner-level grower, a common mistake that can be made is to under-fertilize your crop. Whilst this problem can be easily fixed, an underfed cannabis plant will still harm plant growth, health, vitality, terpene production, and resin production and ultimately result in a loss in yield. Below are the signs of underfed cannabis plants, and what to look out for.<\/p>\n

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\u25cf Nitrogen-deficient plants will turn their leaves yellow and become brittle.
\u25cf Plant foliage will feel paper thin and lack vitality and a shiny appearance.
\u25cf The stems of a cannabis plant will become purple and in some cases red.
\u25cf There will be bronze spots at the edge of the leaves.
\u25cf The tips of leaves can become brittle and dry with a bronze discolouration.
\u25cf Growth can significantly decrease, and flower production will also suffer.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Tools to Fix and Prevent Cannabis Overfeeding and Nutrient Excess<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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The next thing to be aware of is the correct ways to fix the issue. Below are three ways you can help prevent and solve the issue of under-fertilized and over-fertilized cannabis plants<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Using an E.C Pen to Detect Cannabis Overfeeding Symptoms<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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E.C refers to the electric conductivity of your nutrient solution, and means how much salt content is present. A digital pen is the best way to check each time you make a nutrient solution or test the run-off for the exact levels. Using an E.C pen is advised for testing hard and soft water<\/strong><\/a> and when purchasing new, E.C pens will need to be calibrated and should always be kept clean and sterile.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Flushing Over-Fertilized Cannabis Plants with Water and Enzymes<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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If you have an over-fed cannabis plant and have caused a high level of salt build up around the roots and inside the growing medium, then flushing with plain water and Atazyme<\/strong> is required. You may think that flushing should only be done during the final weeks of flowering, however, it is the most practical way to control the amount of undissolved salts present in the growing medium.<\/p>\n

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Enzymes will break down nutrients much faster and also clean the roots, and flushing an over fed cannabis plant for 2\u20133 times over a week will help you restore an over-fertilized cannabis plant, before it is safe again to continue feeding with a lower nutrient solution E.C.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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How to Reduce Nutrients for Overfed Cannabis Plants<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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Once you have given an over-fertilized plant only plain water and Atazyme<\/strong>, your plants will be ready for nutrients, however, to avoid over-fertilization, use only 25% or 50% of the original nutrient measurement. The reason is to allow the plants to gradually bounce back and use up the available nutrients, without the concern of high salt levels building up again, resulting in an over-fertilization issue later down the line.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Checking Run-Off E.C Levels to Prevent Cannabis Nutrient Excess<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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The run-off refers to part of the nutrient solution that exits from the base of the pot. Checking the E.C levels using a digital E.C pen will allow you to see if the amount is less or greater than the starting E.C nutrient solution amount.<\/p>\n

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For example, if you are flowering a cannabis plant and use an E.C of 1.8, and the run-off is testing at 2.8, then this is a clear sign the growing medium has too much salt inside, causing the run-off E.C to spike.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Top Tips to Prevent Overfeeding and Underfeeding Cannabis Plants<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Over-fertilized cannabis plants can really set a beginner grower back, and if the problem is not resolved, can dramatically affect the outcome of the grow. Below are my top tips to consider preventing an under or over-fed cannabis plant and to grow the smoothest and best looking and tasting buds possible.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t

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Tip #1: Use ATAzyme to Restore Over-Fertilized Cannabis<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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Atazyme<\/strong> is an excellent way to provide enzymes with your nutrient solution. Not only will adding enzymes help break down nutrients and salts faster, but roots will appear a shiny and healthy white colour. I love using enzymes especially during the final two weeks at a rate of 20 ml per liter for the cleanest tasting cannabis buds!<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Tip #2: Spot Signs of Overfeeding and Underfeeding in Cannabis Leaves<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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Always check your plants for visual signs each day, as this will help you see if your plant is nutrient deficient or over-fertilized. Doing so will also let you become more familiar with different stains and which can handle nutrients better than others. Using cannabis leaf symptoms to help diagnose environmental or climatic stress will provide optimal growth, overall plant health, and the best chance of huge yields, as advised by M.S.N.L.<\/strong><\/a><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t

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Tip #3: Boost Nitrogen in Underfed Cannabis Plants with Worm Delight<\/h3>\t\t\t\t<\/div>\n\t\t\t\t
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When a cannabis plant is underfed or overfed and there is a shortage of nitrogen, the plants will use the available nitrogen from other leaves. This results in the lower fan leaves becoming light yellow and taking on a lifeless appearance. The bigger the plants grow without nitrogen, the more leaves will become sacrificed, turn yellow and eventually brittle and weak.<\/p>\n

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Increase nitrogen levels by adding a top dressing of Worm Delight<\/strong> to the top layer of your pots to provide a rich source of slow release nitrogen, beneficial bacteria and amino acids.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Frequently Asked Questions about Overfeeding and Underfeeding Cannabis<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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What are the signs of cannabis overfeeding? <\/div><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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Cannabis overfeeding symptoms include dark green leaves, leaf tip burn, stunted growth, and high EC levels in the runoff. These signs indicate nutrient toxicity and should be addressed quickly to prevent long-term damage.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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How can I fix an over-fertilized cannabis plant? <\/div><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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To fix over-fertilization, flush the plant with plain water and enzymes like ATAzyme, reduce nutrient strength by 50%, and monitor EC levels to ensure salts are being cleared from the medium.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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What causes cannabis overfeeding? <\/div><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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Overfeeding is typically caused by using too much fertilizer, not checking EC levels, or feeding too frequently. It can also result from poor drainage or buildup of salts in the growing medium.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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What does underfed cannabis look like? <\/div><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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Underfed cannabis plants often show yellowing leaves, brittle foliage, purple stems, and slow growth. These symptoms suggest nutrient deficiencies, especially nitrogen, and can lead to reduced yield and potency.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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How often should I feed cannabis plants? <\/div><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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Feeding frequency depends on the growth stage, medium, and strain. Generally, cannabis should be fed every 2\u20133 days during vegetative and flowering stages, with EC levels adjusted accordingly.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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Can cannabis overfeeding affect bud quality? <\/div><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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Yes. Overfed buds may burn unevenly, produce harsh smoke, and have a chemical aroma. Excess nutrients can also lead to dark, dense buds with poor flavor and reduced terpene content.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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What tools help prevent cannabis overfeeding? <\/div><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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Essential tools include a digital EC pen, flushing enzymes like ATAzyme, and visual monitoring of leaf and stem health. These help maintain nutrient balance and prevent salt buildup.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t\t

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Is flushing necessary only at harvest? <\/div><\/span>\n\t\t\t\t\t\t\t\n\t\t\t<\/path><\/svg><\/span>\n\t\t\t<\/path><\/svg><\/span>\n\t\t<\/span>\n\n\t\t\t\t\t\t<\/summary>\n\t\t\t\t
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No. Flushing is also useful mid-grow to correct overfeeding. It helps remove excess salts and reset the medium, allowing plants to recover and absorb nutrients more efficiently.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/details>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t

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Final Thoughts on Troubleshooting Overfed and Underfed Cannabis Plants<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Finding the right balance of nutrients to feed your plants during their lifecycle, will be the key to success, prevent over-fed plants and ensure you harvests cup winning quality buds. Always be vigilant and check the leaf symptoms to quickly diagnose any issues before they become a problem, and remember to combine ATAzyme with every feed to enhance nutrient uptake and availability.<\/p>\n

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Often less is more when it comes to watering and feeding cannabis<\/strong><\/a>, and keeping a digital E.C pen close by will give you the advantage you need. Good luck in becoming a master of troubleshooting under-fertilized, over-fertilized cannabis, learning which plants can take large amounts of nutrients, and maintaining optimal plant health, vigour, and growing the best yields.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

Cannabis plants require nutrients during their lifecycle to grow; however, cannabis over-fertilization or under-fertilization can easily occur. Cannabis plants require nutrients to become healthy and robust plants capable of growing strong roots, stems, leaves, and beautiful buds. \u00a0 In this article, I explain all you need to know about over and underfed cannabis plants, covering […]<\/p>\n","protected":false},"author":9,"featured_media":205137,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"iawp_total_views":1628,"footnotes":""},"categories":[325],"tags":[2716,2717,2718,2721,2719,2725,2724,2720,2722,2723],"class_list":["post-205179","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cultivation","tag-cannabis-over-fertilization-usa","tag-over-fertilization-cannabis-usa","tag-over-fertilized-cannabis-usa","tag-over-fertilized-cannabis-plant-usa","tag-over-fertilizing-cannabis-usa","tag-overfed-cannabis-usa","tag-overfed-cannabis-plant-usa","tag-signs-of-over-fertilizing-cannabis-usa","tag-underfed-cannabis-usa","tag-underfed-cannabis-plants-usa"],"acf":[],"yoast_head":"\nCannabis Overfeeding Symptoms and Recovery Guide<\/title>\n<meta name=\"description\" content=\"Avoid cannabis overfeeding with our guide to symptoms, EC testing, and feeding schedules. Boost plant health and maximize your harvest.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/atami.com\/usa\/blog\/cultivation\/cannabis-overfeeding-signs-solutions\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Troubleshooting Cannabis Overfeeding and Nutrient Imbalance\" \/>\n<meta property=\"og:description\" content=\"Avoid cannabis overfeeding with our guide to symptoms, EC testing, and feeding schedules. 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