I have a 65gal and im setting up a 20gal sump for it...ive been fighting gha for a while due to high phosphate levels from my previous water source...once my sump is set up im going to run a gfo reactor. Has anyone ever used the two little fiahies brand gfo phosban reactor? If so are they worth the price? And what size would i nees to support my tank and sump?

