LF : Lifereef overflow box

[Reef Pilot]

Originally Posted by gobytron

Thats a very interesting design there and one I havent seen before...
Very cool, thanks for sharing, I think I'll try one of those soon.
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The only scenario that I could figure might cause a flood is if the overflow pipe slits become clogged. But you can add a 90 degree elbow to the end of the overflow pipe instead of a cap, and cut the open end to be just a little higher than the overflow pipe with the slits. That then serves as your emergency overflow.

I should also mention that you can handle more flow if you lower the T at the back. I needed it high on mine to drain into my sump. And I used an airline valve in the tubing to regulate the water/air flow to the return pump, or close it if I wanted to for any reason.

I don't know why people fool with these overflow boxes and U tubes. Definitely asking for a flood, sooner or later.... This PVC pipe design is a lot safer, and cheap, too.