Heracles (First grow on coco)

Cannabis leaves are supposed to be light green. Dark green leaves is a sign of high amount of Nitrogen.

Coco needs to stay wet with a ph of 5.8. I have grown in coco for a long time. Coco works like perlite. It is impossible to over water unless you let it sit in run off. Calmag is also needed in coco grows. As long as it stays wet and you provide heavy irrigation regularly with new nutrition. Plus ph stays at 5.8 going in and comming out your plant should thrive.

Hola esta en los parámetros correctos 6.4 esta bien y los ppm en 1000 tampoco es mucho. Si haces un lavado de raíces quitaras todos los nutrientes del sustrato. Si piensas que es alto el ec en tu nivel de drenaje solo riega con agua hasta que baje un poco. Pero para mi esta perfecto

Looks like light overfeed. Don't forget not only deficiencies exist, toxicity and lockout can make same damage. Epsom salt would sort any magnesium lack in 2-3 days. Dont panic, just grow. Watter more, love more, all will be good. Have run off to prevent build up.

Continue flushing. You will need to run 2x or 3x the container size in water, possibly even more. If in 3 gallon containers run 6 gallon or 9 gallons of water through it. After you have gotten it down, follow the flush with quarter or half strength nutrient. Goodluck growmie.

This is not a disease. You are growing in coco treating it like it is soil is the problem. I have grown in coco for years. You have a salt build up from lack of drainage. Coco is a high irrigation system of growing with a hydro boost in a potter. So ph 5.8 in, 5.8 ph out in run off. Coco should never dry out. Always wet but never sitting in run off. The toxicity of nitrogen and the deficiency signs is biggest clue to improper drainage and salt build ups. You need to flush this coco. Till ph in run off is 5.8. Then reapply new feed at 5.8 ph. Flowering npk ratio is 1-2-3.