Hey, I'm a first timer and I've been having this problem with 3 of my four plants.

They're yellow around the edges with some lower leaves going completely yellow and eventually falling off.

-I initially thought it was a nitrogen issue so I added seabird guano. That didn't seem to help.
-When that didn't work, I raised the light (it was a little close)
-Tried lowering the PH of the water, but I'm not sure if I'm doing it right. Am I setting the PH of the WATER to 5.5-6.5 or am I making the water over-acidic so that I can get the SOIL to 5.5-6.5? I have to make the water very low to get the PH of the soil to 6.5, and even then it'll go back up to 7 after a day or so.

symptoms:
-yellow leaf edges, with some of them having an "alligator skin" appearance. This started at the lower leaves and then spread to all of them.
-Leaves at the bottom are yellowing.
-One leaf on one plant has developed little purplish spots that seem to me like a potassium deficiency. I haven't added potassium yet because I'm hoping that the PH thing takes care of it.

I hope I can get this resolved soon. I want to take some clones and start flowering, but I want them to be healthy first.

I've attached some pictures below
sloopyjoe Reviewed by sloopyjoe on . Yellow edges and banding on my babies... Hey, I'm a first timer and I've been having this problem with 3 of my four plants. They're yellow around the edges with some lower leaves going completely yellow and eventually falling off. -I initially thought it was a nitrogen issue so I added seabird guano. That didn't seem to help. -When that didn't work, I raised the light (it was a little close) -Tried lowering the PH of the water, but I'm not sure if I'm doing it right. Am I setting the PH of the WATER to 5.5-6.5 or am I Rating: 5