Opinions appreciated: check valve vs anti-siphon holes in overflow returns

[reefwars]

Originally Posted by Doug

Jeez, did I not say that also. I added the anti siphon just for back up.

Yeah but you didnt put it in fancy bold letters lol

[Doug]

Originally Posted by reefwars

Yeah but you didnt put it in fancy bold letters lol

Oh ok, sorry.

[mark]

No siphon break holes or check valves here, just room in the sump for the back flow.

[tim the toolman]

Originally Posted by mark

No siphon break holes or check valves here, just room in the sump for the back flow.

+1 for me