Prosban Reactor

[whatcaneyedo]

Sounds like you're in the same situation I was in a few months ago. When I first tested for phosphate I got a reading of .5 so I started running 250ml of rowaphos (changing it each month) in a phosban reactor and I continued to do 10% (20gal) weekly water changes. I found this only brought my phosphate down to .25 and kept it there.

The rowaphos becomes saturated quite fast in my system, probably in as little as two weeks. So now I change it out more often and I've increased my water changes to 20% (40gals) each week. My phosphate currently measures at 0.1 but I want to bring it down lower still.

This is just my experiance so far but maybe it will help you. I also strain the packing water out of my frozen food before I feed it to the tank, I grow gracillaria macro algae in my fuge, and I dose kalkwasser with my top off. Some good reading can be found here:

http://www.reefkeeping.com/issues/2006-09/rhf/index.php
http://www.reefkeeping.com/issues/2004-11/rhf/index.php