adding refugium, comments?

[mark]

Originally Posted by untamed

No problem with the design...but insure that you have lots of overflow capacity in case that pipe gets blocked by something. You could have quite a flood down there before you noticed anything.

Flooding is a fear, which has me thinking, wouldn't be too difficult (in theory) to wire up a moisture sensor that would trip out the return pump if got a leak in the mech room. Would leave the CL running for circulation (aeration). Could also have in series a upper limit sensor on the sump, would save me from the wife and the tank from the auto topoff.

See often 600gph gravity for a 1" bulkhead, would that need to be reduced if mounted sideways?

[mark]

well bulkhead doesn't work, details here with pictures and video.

[Pescador]

Would it make any difference if you had more of down angle on the return.
Maybe by using flex from the bulkhead or raising the ref? Maybe the air could get out easier and give you more flow?