how many times a hour should the water go through the sump?

[Zoaelite]

Originally Posted by banditpowdercoat

I was allways told that it is only the very thin layer of the surface we want? The solid particulate waste acctually gets absorbed/eaten by corals, inverts etc.

Or NP Biopellet bacteria for that matter . Thank you both of you, learned some new info today because of you!