What up everyone, ive been checking my PH levels at a very constant basis. The PH levels are usually around 7 so i put some PH lower in to bring it down to 5.5/6.0. The problem is when a couple hours go by the PH gets goes back to 7. We just changed the water, we change the water every 7 days. This is becoming very problamatic for me, even though the plants are growing at a pretty good pace but it could be extremely better. I just dont understand what the problem could be. All the leaf tips are slightly burnt to, but the plants are looking very healthy...thank god.