I know, I know, it's a great phosphate remover. And it's fairly cheap and available everywhere.
But it is a freaking mess. Stains everything it touches, clumps up if calcium is high in days and can't be effectively tumbled. At least I cant get it to work for any length of time. It either clumps or grinds out brown colored rusty water over just a few days. In the sump it turns into a brick in little time. I am going to try to not use it. I used the BRS two chamber reactor and the GFO
would stop tumbling after only a few days.
My system with the algae scrubber and skimmers keeps phosphates at about .5ppm. I now use a pair of Lifegard fluidized sand filters adapted to hold Purigen (nitrate) in one and now Phosgard (phoshate, silica) in the other to replace GFO
, to reduce organics even more. The Purigen tumbles great and the Phosgard beads also tumble clean. I have particulate filters on the output to catch any tiny pieces shed. I shoot for phosphates to be under .05 ppm
, so we will see.
Current levels are .04 ppm
phosphate and .018 ppm
nitrate or 18 ppb. Hanna measurements.