Ideas on quick phosphate control

[nrosdal]

I am not sure about the tang issue. But have no problem with buildup of the flocks as i dose mine in the chamber before my filter socks so they catch all the phos that has binded. I do find that my filter socks last about 1/2 the time that they did before i started with the phoz down. But they are much easier to wash then a dirty gfo reactor.