Sump rock?

[Nonfamous]

Okay, so I added another 10 lbs of rock to my sump. So that brings me up to about 135 lbs total plus about 50 lbs of sand. I know bacteria is what I'm trying do grow but I have a question. With all the filtering and skimming and GFOing going on in the sump, is any really growing in there? I know bacteria grows everywhere, but is the sump really a good spot?

 

[little_fish]

yes, because the water will cycle through there

 

[Nonfamous]

Really the reason I ask is I have had rock rubble in there from the start. Even with night time lighting, with all the algae issues in the DT, I don't have a hint of algae on them. No coralline or anything. Maybe the flow is too high for that?

 

[little_fish]

i dont think you have the correct lighting over the fuge to grow algae