This is my first saltwater tank. Started with Dr. Tim’s One and Only. Everything seems to be going well except my PH keeps getting lower. Based on API test kit, it started around 8.5, then yesterday 8, now it’s coming in around 7.5. I have turned on my protien skimmer today as I read that can help. Beyond that I’m at a loss on what to do and don’t what to use the PH boosting agents and would rather fix the problem.