Kight Burn or Nitrogen Deficiency?

[BR2K]

I meant "Light" burn, oops. I suspect my LEC and 60 inch ceiling may be too much for the plants. But I'm feeding them at seedling strength. Thoughts?

 

[oldjarhead100]

BR2K if it was knight burn lol it would be on the top leafs this is lower so I would suspect its root issues try transplanting them to bigger pots the recommended distance for my LEC is 15 inches if I had them over seedlings I would start at 20 inches and work my way down from there good luck

 

[BR2K]

BR2K if it was knight burn lol it would be on the top leafs this is lower so I would suspect its root issues try transplanting them to bigger pots the recommended distance for my LEC is 15 inches if I had them over seedlings I would start at 20 inches and work my way down from there good luck

oldjarhead100 - You hit the nail on the HEAD!! I have all of them transplanted. One curious factoid: Although I watered all four of them relatively prodigiously yesterday, my small dark plant coco-coir was dry and fell apart.

They've been on a 24 on 0 off schedule. I'm going to 18/6. My 315W LEC light is adjusted to 20" and I'll see how they like it.

Thank you for your guidance!!!!

 

[FlyingDutchPaddy]

hey br2k,

i've a 315W ceramic light.
seedlings, i have that light 3 ft away.
as they get older, 2ft from the canopy.

looking at the bottom leaves, i think indeed too little N, maybe a bit light on P as well.

up N, up P i'd recommend, maybe try nutrients at 3/4 strength as appropriate for age?

 

[D.A.A.S.69]

Those 315s are great lights ,I think those few lower leaves, were from something else, like jarhead said, the new growth looks great.
20-22inches should be fine, when mine started flowering I dropped mine down to about 15inches.
GoodLuck with them, an have fun.
BR2K

 

[BR2K]

I watered again, with the appropriate level of nutrients, according to the schedule. I'm keeping my fingers crossed!!

 

[oldjarhead100]

do you have an ec and ph meter If i used what the manufacturer suggested my ppm would be around 5000 so I would be careful to not give to much