I remember reading somewhere along the way that certain nutrients dont get along with others depending on where they are derived from/method of extraction. For the life of me i cant remember what it was. Magnesium? Was wondering if someone might be able to clue me in on just what happened here so I dont make the same mistake in the future:
I initially thought it was a deficiency given the location after I began supplementing calmag from (mega crops) while i was using Advanced Nutrients Sensi A/B.
I have since flushed and appear to have it sorted after using a liquid calmag for coco. Im traditionally an organic(‘ish) soil grower but i like to dabble in coco so im still learning. First time ive had issues in coco, each plant i had done prior went the entire grow without a sad leaf, even the cotyledons stayed healthy through harvest, something I had never seen before.
K,Ca, and Mg have a certain ratio that must be kept to avoid what is called antagonization. The ratio is usually 3,2,1 K, Ca, Mg. So for instance you would want an elemental ppm of 75 Mg, 150, Ca, and 225 K to avoid the elements antagonizing or “locking out” each. Other elements antagonize other elements as well but K, Ca, Mg are the usual culprits and since Ca is the element that moves most of the other elements through the plant, if Ca, is locked out expect deficiencies from other elements as well.
Thanks guys.
That would possibly be an issue, i started toying with the mix ratios adding a little bit more of B and a little less of A. I reckon i will keep the ratios the same, only add a little less so i can have room for the booster in my EC.
I try to keep my EC below 1.5. To avoid over feeding, so I dick about the ratios so I can have room for the booster. I know each strain and nutrient line are different, but what would you say would be a safe EC ceiling for flower in coco?
What I see is purple petioles (strain related? ) and purple zones in the leaf, that’s normally caused by a Phosphorous deficiency, maybe blocked for too much Calcium?
I mix my own salts which is super easy and gives you total control over what you feed your plants. I’m drain to waste coco you could feed the plants quite high, my current veg formula mixes to 1.9/2.0 EC. I go as high as 3.2 for clones in fresh coco till all the cation sites are filled then I go back to 1.9 Ec.
Keep in mind, ratios and elemental ppm are more important than the overall EC. Increasing EC to correct a deficiency will only cause more problems if your ratios are not balanced.
