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Mp uk

First time coco and problem

Posted (edited)

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Hi. I'm  growing for fiew years now. Dwc and soil with no problem. I start in coco month ago and girls are tinny red steams and some red sripes. Leaves first was green then light green and after rising ec to from 1 to 1.2 go nice green again but some nut burn show up on new grows and also middle of leaves go light green and adges are still nice darker green. Temp 23 24 day 20 21 night. Humidity never lower than 55. Now rise to 70 and still nothing better. Feed with ro water + cal gel up to 0.5 then silicon a b and other additives. Full line from biogreen. Ph 5.8 yesterday after feed with 1.2 and 5.6 ph I get runoff 1.5 and 6.53 ph. Under 2 315 Philips day lights. New strain from rqs called north thunder fuck. Any advice?? Im just thinking about high runoff ph

Edited by Mp uk

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Posted (edited)

Root ph is normal, within the range. Id be worried if it was very acidic, like ph 4-5 which would suggest root problems. Might be a nute lockout, i had something similar in the past. Flushing helped me. If you do that just dont forget to feed them with fresh nute solution. Have you checked for bugs by the way? Maybe something is eating roots? 

 

 

Edited by Shroomtripps
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I cant see any nute burn mate. Looks like textbook nitrogen deficiency to me. I recently read on here that purple/red stems are usually the result of cold roots which prevents nutrient uptake. So I’d measure the temps of your root zone and RO water. Atb

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I would check your root temps too. I had problems from cold roots purple stems etc... 

 

I would make sure your lights off temps are 21 & lights on 27. To be safe. Electric blanket ? Or tube heater?

 

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cold roots is what it sounds like to me too  @Mp uk  

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Hi. Thanks for response. Night temp are 21. I check roots and they looks nice pure white. When lights on temp are minimum 22 23 on pot level and I feed with 20 temp water. After giving them feed 3 days ago on 1.5 ec 1700tds they going green again so will see what will happen. I'm surprised that tiny plants require so high ec. 20l pots and roots coming out on full bottom. I use canna coco professional plus and already find two tiny plants growing next to my plants... maybe this coco is not clean as it should be??

Edited by Mp uk

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