ph 7

Please help!!!!!! I have a waterbox marine 60.2 36 gallon reef tank. The guy at the LFS said my mag was low so I dosed it for the first time ever yesterday. I didn’t check it until tonight a day after and the ph was so low. I added buffer and it went up again . One of my sps looks a little...

Question is in bold and underlined, the rest is explanation. I just put in a 2 400gpd RO membrane system in my basement mainly to use for my tank top off and water changes but I also piped in three refrigerators and a few drink fillers throughout my house all ran off of a 30 gallon RO pressure...

Quick question guys. My ammonia, nitrite, was zero, nitrates were in the usual range, ph a little low. Did WC, added ph buffer to bring ph to 8.2 , ammonia 0, nitrite 0. Added 4 new fish. The ammonia increased to .25, fish were doing fine, I was adding fritz turbo 900. The nitrite was still 0...