Quote Originally Posted by kallidah
I have 5 plants that have leaves turning yellow on the ends of the leaves. It started out on one plant and has quickly started on at least one branch or more on all the other plants. It started shortly after i added a 90 watt LED UFO light. plants were started on fluorescents. Not sure if that is the problem.

That's not the problem.

I have sprayed them 1 time with fungicide 3. which handels fungus, mites, and insects. It has been 48 hrs since i sprayed and it is still spreading. Here is my set up.

Safer's 3 in 1 had a bad batch a while back, didn't stay mixed.
If you don't shake the hell out of it before spritzing the active ingredients settle to the bottom of the container and come out way too strong for Cannabis.
Killed 3 of my friends G13s!

Hydroponics/ Bubbleponics system setup in closet started 3 weeks ago from seed. closet stays open for air cirulation.
rockwool cubes in hydrotron grow rocks
1 Dual Spectrum 65 High Output Fluorescent Bulbs
1 Dual Spectrum II High Output Fluorescent Bulbs
1 90 watt UFO led lamp.
1 rotating fan
temp range 72 to 77 degrees
humidity 44% to 55%
I am using premeasured Micro and grow nutrients that came with my system from manufacture.
Thanks for any help!
Try spraying plain water on the leaves to wash them.

Good luck,
Weezard