I am now fighting green algae and what appears to be the beginnings of red slime and bubble algae. I currently use RO water bought at the local Publix but have no way to test for metals or phosphates. Could bad RO water be the cause? Any other suggestions? I leave my lights on for only 8 hours but would like more for my corals. Anyone in ATL have a TDS or phosphate test kit I could use if I came to the next meeting?