Ball check valve

[BBQHILLBILLY]

Any experience here. What is the best ball check valve or double check valve out there for sw aquariums and why?

[Big_Pun]

a good syphon break! ive never used check valves i always adjusted my return to right at the surface so air breaks syphon right away. i use my returns to agitate the surface and my power heads are just for flow in the tank.

[allan]

I'm tagging along as well.

I thought someone on here had posted a check valve a ways back. It would be nice to be able to stop all that water from returning to the sump.


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[Big_Pun]

this suppose to be the best because you can service it.
http://www.bulkreefsupply.com/george-fisher-wye-check-valve-1.html

[Fenker]

i uses a pvc one from the local hardware store, it has a metal spring but i used it for 4 years on my 55g sw. after i took the tank down the spring still was fine and not corroted or pitted or rusted. as well as no ill effects on coral

[allan]

That spring is what I've worried when thinking of using that particular valve.

[rrasco]

Siphon break all the way. Or as Chris said, position your returns just under the normal water line.

[BBQHILLBILLY]

I was entertaining the idea of a closed loop vs running a direct return from a large sump to holes in the middle of the tank to get rid of powerheads.:bigsmile:

[Scutterborn]

I will have zero powerheads in the tank. I think it makes for a clean look.

[electricrcplane]

http://www.bulkreefsupply.com/swing-check-valve-true-union-1.html