How new is the tank again? Try some phosban, I just put some in a filter sock earlier, and stuck a tube from a mj 1200 into the sock. I suspended the sock by zip tying it to my return's hose, and just let the mj hang in the water. The phosban is fluidized in the sock, so it will be alot more effective. If you have phosphates, they will inhibit the growth of macros. Is the remora in a sump? I run my halides for 12 hours, and I also run 6 T5s for 14 hours. Even though my DI Resin is toast, I am holding the phosphates off with phosban.
Check the phosphates of your freshwater. See if that is where the problem is stemming from. You need to be systematic, and find the source of your woes!






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