What type do you use? I use Marineland Black Diamond. Please specify how much you use and how often. Im looking for a good carbon choice that also is good on money.
Seachem. Black Diamond is the same grade as Seachem, both of them being bituminous coal, which is a high grade carbon. Seachem, however, has better hydrodynamics, being spherical. You get better usage of the surface area because it does not clump.
I have a HOB emperor, that has the default emperor cartrage carbon, than I have the extra thing full of ammochips and seachem matrix. than I have a bag of purigen in the middle. I do not have a sump yet, so that emperor has it's work cut out for it! :yay:
I run carbon only when I think the water isn't clear enough. I put about three cups of it in a carbon sock and leave it right in front of the return from the overflows. It's usually in for about a week or until I see improvement in the water clearity.