GFO is the most trusted method for lowering high phosphates in a reef aquarium. Tanknicians OB-GFO is designed to be run in the same media bags you use for carbon making it great for all aquariums. Phosphate management has never been easier, spend more time enjoying your aquarium and less time fiddling with media reactors.
*Easy phosphate management in reef tank
*Lowers phosphate quickly and efficiently
*No need for media reactor, just use a media bag!
*GFO rinses in seconds
*Resistant to compacting and crushing
David Noller –
This GFO worked amazingly well for me. My phosphates had climbed up to 1.36, in 5 days with 1 cup of this in a media sock placed in the path of water flow in my sump, it brought my phosphate down to .1 The greatest thing about this media is it doesn’t need a reactor due to its granular size. It’s a win 🏆 Excellent stuff!!!!