I am lost what exactly is a power nitrate filter??Anyone with a simple design for a power nitrate filter either hob or in sump or ref,i'm trying it in refugium with in slow flow in a filter media bag with a nitrate sponge media inside bag..
2(NO3) -> N2 + 3 (O2)
Does Purigen effect the growth of macroalgae's like Chaeto or chalurpa in the sump??You could use something absorbitive like Purigen in your filter but you won't be able to grow healthy plants if you use Purigen (pulls too much of the essential ingredients out of the water).