Brown Spots On Shade Leaves

okay so my plant is 17 days old. a few days ago it started to get little brown spots on the shade leaves. there is also a lighter green on some of the leaves throughout the while plant. can anybody tell me what they might think it is? its under 2 100 watt cfl's and 2 2' floros. btw its in a hydroponic system with an air stone and water flow on 24/7. im using heavy 16 A and B solution for a fert. im also using rootjuice and superthrieve. the shade leaves are also feel pretty dry.

A deficiency for sure... check around on the forums.. theres a good post with pictures that describes what problems you could be having.

yea ive seen some but i still can't figure it out. i was thinking maybe a Mg Def but im not completely sure.

Id get rid of the super thrive and pick up some botanicare Cal-Mag. Apply 5ml per gal to start with. After that, pay attention to your new growth, should be darker green and much healthier looking.

Ive struggled with this problem several times, but in my opinion it doesnt effect the outcome of your plants too much, other than looking ugly... If your too deficient though it could cause serious problems and cause lockout, but mine have never been "too deficient"...

thanks for the advice. im now thinking its either Ca, B, or Mn not Mg. ill try some Cal Mag though. thanks

hopefully this is better. sorry, taken with my phone.

mrmatt said:

Id get rid of the super thrive and pick up some botanicare Cal-Mag. Apply 5ml per gal to start with. After that, pay attention to your new growth, should be darker green and much healthier looking.

Ive struggled with this problem several times, but in my opinion it doesnt effect the outcome of your plants too much, other than looking ugly... If your too deficient though it could cause serious problems and cause lockout, but mine have never been "too deficient"...

Click to expand...

cal mag worked great. brown spots have stopped spreading. thanks man