My system is medium sized – 2 IBC totes as fish tanks, 2 55 gallon drums as clarifier and demineralizer for each tote. My raft bed is 20 feet long, 6 feet wide, and roughly a foot deep. I recently added water to my system and tested it. pH is ~8.4! I know this is higher than desired. All our water comes from a well, and this is likely entirely the cause. Do I need to drive my pH down in order to…