I went back to using Rowa Phos and seems to work good. I use the Fauna Marin Ultra Lithe System as well and it is suppose to keep Phos at zero . I tested my water recently with a Hanna Phos tester and got a reading of .05. I have a Salifert Phos tester at home and it always comes up undetectable. One thing I noticed running Rowa is that I have to run Carbon after the reactor or my clams start closing and not looking so healthy. This doesn't happen with the carbon .
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