Review on Kolar Labs GFO - 1 lb Phosphate Removal Media for Saltwater Reef Tanks and Coral Well-being by Brenda Smith

Tried this one (and many other GFO brands over the years). upset. The bag was mostly dusty and could not be cleaned despite long rinsing. Tried using a 180 micron filter in Seachem "The Bag" and particles still came through. I ended up putting it in 100 micron filter socks in the second stage of my two mechanical filter stages in the sump and it seems to work, but the toe filter clogs very quickly so it's not a long-term solution. Can work in a reactor, but useless in a bag.