I already did a bunch of reading before i'm posting this to not waste anyone's time but also this problem may be a combination of things... Basically the edge of the leaves on this one plant are slowing curling up at the edges like razor blades... It started to do it about a week ago or so and then i changed the nutes with a fresh batched and it stopped..Now its getting bad...The root system is well established so i know its most like not under or over watering. The ph i always keep in the 5'sa little under 6..The only thing i did dif is now since they are taking of so well when i redid the nutes i mix an aggressive strength amount in it but a little less. The plant seem to have no problems till now. The nutes have to be change by tomorrow. I am using a 5 gallon bucket with about 2.5 to 3 gallons of nute solution in it. I have a 30 to 60 gallon air pump on just the one bucket so the water def has good oxygen... I'm more leaning towards a nute problem...ether A. the 2.5 to 3 gallon solution needs changed quicker then a week because it is pulling to many nutes..(don't have a ppm meter yet so been making fresh batches every week) or B. the solution still has plenty of nutes but is missing certain nutes Here is a pick of the plant..It is under a 400mh and 14 to 15 inch's from the light...You put your hand over the top of the plant and the light is barely warm at all..
Also nute burn and humidity could it be ether of those..its winter and i live up north so the air may be a little dry right now.... I have a humidifier but no timers for it...i can manual turn it on once or twice a day in the room i guess to raise humidity...?
the temps are about a cool 70...don't know the humidity. I just put a warm mist humidifier in the room cause its winter and kinda cool and dry air. I live up north and winter is starting quick. I also moved it away from the light a little even thought it wasn't even that hot...
well i would go back to the prior nute mix. or even a little less than the prior nute mix. and try to increase the humidity a bit.
i put a humidifier in there and moved it down from the lights... i'm going to make a reg mix like before instead of the aggressive mix.... its been a week or so and needs changed anyway
How are your roots looking? Nice and white? You said the room temp was 70 so I'd have to imagine the res temp is at that or lower. What brand of nutes are you using?
Skiddy my man! Those babies look a hell of a lot better than the last time we met lol. Why not just try flushing them. put them in plain water and start eliminating variables from there. Cannabis Plant Problems & Symptoms | Marijuana Nutrient Deficiencies | Grow Weed Easy