can't decide on flow/returns

[DJ88]

Spike,

I'll add in a few bits here..

From experience I can back up what Tony has said about flow in the sump. Go for hte minimum or a decen't flow rate through the sump. Say about 700-900 GPH. Then add in some sort of closed loop.

I am setting up a new system and will only have a small return pump but have a MAK4 on a losed loop system. I am also looking into a SCWD on say a MAG9 or 3MD for that alone to create some more random flow patterns.

For my returns I went shopping down south and purchased Loc line tubing. It allows me to angle the flow in any direction/angle I chose.

Take a peek online for that stuff. It is excellent for this application.