I am still running PhosarHC. I am a little leary of taking it offline. GCarroll says to keep it online so I will continue to use it. Everything is going well so far. I am still experiencing a little bit of hazy light brown algae on the glass. Corals are starting to get more color as well. Keep your fingers crossed.
Greg: can you chime in here & let us know how much GFO you're running?
Personally, I'm only running a tiny bit in a reactor & thinking about pulling it completely.