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

[bignose]

Everything that myka said makes sense. I don't use check valves on my system but I drilled holes in my returns and I make sure that they are cleaned every so often to prevent plugging.

[Doug]

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

[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.