need some ideas for fuge bubble problem

[Fireworm]

http://www.reefcentral.com/forums/showthread.php?s=&threadid=1415622

Here is my thread in the DIY section

 

[JCR's Reef]

Keep the plumbing under the water. If you have to add a 90 to put it under water. Fill your refugium up until water starts running into your tank. Then fill your tank up so it wont overflow if you lose power as it will siphon. As long as your not drawing air with your pump up into the refugium, and your plumbing is under water not drawing air, you shouldnt have bubbles.
If you dont want to do it that way you could have and overflow box in your main tank for the refugium pipe to flow into and the bubbles would stay on the surface of the tank.

 

[JCR's Reef]

You might also have to offset the inlet bulk head from the drain bulkhead. I cant tell from the pic but I think you would want your drain lower than your inlet. I would put your drain bulkhead about a half inch lower than your return.
Hopefully that helps you out a little.

 

[Fireworm]

Thanks josh,

Tazman gave me a few good ideas to try to.

 

[Fireworm]

<a href=showthread.php?s=&postid=12792158#post12792158 target=_blank>Originally posted</a> by JCR's Reef
Keep the plumbing under the water. If you have to add a 90 to put it under water. Fill your refugium up until water starts running into your tank. Then fill your tank up so it wont overflow if you lose power as it will siphon. As long as your not drawing air with your pump up into the refugium, and your plumbing is under water not drawing air, you shouldnt have bubbles.
If you dont want to do it that way you could have and overflow box in your main tank for the refugium pipe to flow into and the bubbles would stay on the surface of the tank.

The plubming is under the water. The drain is in the water by about half inch or so. I am not sure I understand the 90 though. Are you suggesting that I put another 90 on the bottom of the drain instead of a pipe straight into the tank?