Sorry for reposting from Safe-t-sorb (sts) And Crazy Ph Ammonia: 0 Nitrite: 3 Nitrate: 20 GH: 25 KH: 20 pH: 6.2 These are my parameters from yesterday. I added 1/4 tsp of baking soda yesterday night and did a 25% water change today morning. I am looking for a pH of 7.5. I know STS can keep depleting my pH, but it will stop someday. What should I do?