Hey gang I'm back again, and still sick as a dog.
The bigger problem is my babies are too!
I have done everything I can possibly think of, but I can not get the PH under control.
I have done res changes where I made up 6 separate gallons of nuted and PH'd water, put them in the tank only to see the PH fluctuate wildly.
The other day I checked my PH and it was 4.8!
I added a little PH up, waited 20 minutes and was getting a steady 6.2.
I again checked it about 3 hours later and it was at 7.9!
There are no light leaks, yet my water is cloudy and I'm getting brown places on my roots.
I have been adding hydrogen peroxide (1 tablespoon per gallon) and it doesn't seem to help.
To deal with the heat issues, I have been removing 2 gallons from the res everyday and replacing with 2 gallons of fresh nuted PH balanced water, and then at night I put ice packs around the res to keep it cool.
I really don't know what else to do and now because of the PH problems, I am getting what looks to be nutrient lock out (going by the pics in the problems thread), I have rusty spotty leaves and the others that don't are dull and drooping down.
I'm getting really frustrated and this Sunday is 4 weeks vegging and the tallest plant is only 6 inches above the top of the res.
I'm going to try to get some pics tonight, but if anyone has any ideas I'm all ears, since I am at my wits end!