Nute burn, flush then reduce feeding.
lights: 600w mh
nutes: ffof normal line
I have a few showing these signs. I went through the diagnosing sticky and have some ideas, but i wanted to ask the experts. If its mag deff I can go get some salts for a spray, but i want to make sure im spraying them with the right stuff...
ok, so i flushed them a few days ago. i havent really seen anything getting better. the leaves are curling up around the edges towards the light. when i feel the rolled edged they feel super soft like i could just unroll them. the ones that had curled up earlier still have the shape but where the leaf has curled it is hard and lifeless. I have also moved them down to the floor so they have more room from the light, now about 5ft originally thinking it was probably heat stress or lack of enough humidity
looks like heat stress - how close was your light to the canopy?
originally like 3ft, probably too low. its a cooltube so i didnt think it was putting off too much heat, plus i have a fan that keeps the glass cool. but i feel like the fan that was blowing over the canopy wasnt keeping the leaves cool enough
3 ft should have been plenty to be honest
i reckon you are right with the mag def. i had it on my plants and the tips went pale and curled down and some leafs rolled up. after a while the older damge went crispy and dry.
Aquaponics : the future of organic cannabis
i think it could have been a combo of humidity being to low(20%ish), lights being too low with only a fan blowing at the lights glass and not across the canopy keeping the plants cool. just seems like it could have been too much for the tiny leaves imo idk
The tube thing thats going on in the second pic seems to be getting a little worse for a couple. I switched from distilled water to spring water. Thinking it could be a magnesium thing. Any thoughts? After they roll up like that the leaves die on the rolled parts.