Can I get away with an internal pump?

[Potatohead]

Originally Posted by GQsmooth

You sure? 1100 gph is around 5x and that's bare minimum. It's really on the edge. I don't think it would work

I usually shoot for 4-5x, more than that is fine but it might be a little bit of old school thinking. I don't know if it really matters, if water goes through the sump twice as fast but is only skimmed or goes through reactors half as much each time, it's the same end result either way. Higher turnover does put more through your filter socks though.