Revilo
Member
So if I put a DSB on this tank, it would limit the capacity of the marine pure block to remove phosphates because of the limited nitrates from using that DSB? Is that correct?
I think you are over thinking it. Picture it as an ultra porous piece of live rock and nothing more. It has the same capability as any piece of live rock for filtration except it is more absorbent and has way more surface area for bacteria to grow. It doesn't contain any secret chemicals or additions to remove nutrients; it just provides the right environment for bacteria to do what they do best.