DIY Overflow

[oupulino]

Does anybody has any experience with using this type overflow????????
Have you ever loose suction,siphon?
Here is the link:
http://imageshack.us/photo/my-images...erflowwf5.png/

 

[Gitsoe]

what he said
vvvvvvvvvvv

 

[beaslbob]

Any hob overflow can lose siphon so what I did with my testing was setup a venturi to the return pump or some display powerheads to constantly suck out any bubbles or air that might accumulate in the hob part.

FWIW this thread show some of the designs I tested. Just $20 or so of pvc:


https://www.reef2reef.com/forums/north-alabama-reef-club/36891-guy-want-beaslbob-trap.html

my .02