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 .

I would pay you to test my water too :)

Yup, that was it. I didn't buy it, and later heard that it caused a total system wipe out. It happened to someone with about 80% less GHA in their system then I had at the time.

Looks like lots of different products are being used.
I found RowaPhos worked the best.
I tried recharging opti-phos but it was messy and I was not sure it actually worked.
I have just started using the ZEOvit system to control my PO4. My phosphates are rising (0.10 using Hanna photometer) but they should start to drop as the tank becomes nutrient poor.

I am using contraphos right now myself.

I'm using Chemipure Elite in a power filter. Seems to work ok! If I had a reactor I would use Rowaphos. I've used it in the past and I was very happy.

with the bulk buy of gfo with chin, looks like lots of reefers will be switching their response :)

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Rowaphos in a bag in my sump for me. Probably not the most effective utilization of of it, but it seems to work.