Backflow Preventer

[gclackum]

Whenever I shutdown my return pump. Water change, feeding etc., the fill line drains. When I start the pump back up, there is quite a bit of air trapped in the chiller that releases back into the tank creating a lot of trapped air bubbles in my rock. Looking for solutions. Anyone use a backflow if so what kind?

 

[york1]

Wye Check Valve

Why does BRS recommend this? Check valves are always a good idea to have, however when it comes to reliability you get what you pay for. There are other good check valves on the market but we feel that the Georg Fischer Wye check valve is by far the most superior. They have a removable plunger...

www.bulkreefsupply.com

Thats what i use

 

[ichthyoid]

I had one ^ on my 150. I put an isolation valve in-line to be able to clean it regularly.

 

[Seajay]

It's kind of a trade off. I have a basement sump, so I get a lot of air purge every time I fire mine back up. A check valve is another thing that requires maintenance and a pretty significant likelihood of failure at some point. Personally, I choose bubbles. Never really had a problem with it.

Maybe you could add a valve that bypasses the returns and feeds back to the sump, then once the air is purged you flip it back to feed the display??