Quote Originally Posted by hippieshaven
Is there a chance she has slime in the rockwool? Also, in my ignorance, what is a gambit?
Yes Rockwool could be the problem catch run off from each pot and test it separately. Run the gambit is old slang for doing a series of events in order is all. Rockwool holds water in for days. If you use Rockwool and water it every 4-6 hours then only the Rockwool is getting to much water. Try burying a piece of Rockwool in your grow rocks and after 24 hours check it and you will see how wet it is and how much water it holds in.

Well my personal preference is lava rock but most people use grow rocks. I only prefer lava rocks so my trees have something bigger to attach to and not top over. 90% of the grows use straight grow rocks and plant straight to medium. I quit using Rockwool many years ago I always had problems with Ph shift when I used it no more Rockwool no more problems. As for cloning I only use an Aero-Cloner.
Zandor Reviewed by Zandor on . HPS Lights adjusting Ph???? We replaced our lights from a T5 to HPS and we've had major alterations with our ph and ppm. With the T5 the ph and ppm remained consistant. We would go for days with the same ph and the ppm alternating at the 1320-1290 range throughout the day. Since the exchange of light to HPS, we are adjusting ph two to three times a day to lower it to the 5.2-6 level. Our water is being absorbed more rapidly due to the heat. Because these issues didn't exist before, we are pretty sure it is the light Rating: 5