fuge bubble problems

[BenjieC]

I finally have my system up and running and I have my fuge overflowing into my display tank. As it's overflows it brings bubbles into the display tank. I've got the flow as low as it can go aprox 100-200gph. I've tried putting a tee on it with it open at the top. I've tried putting a couple 90's on it, so it overflows again right above the water. I'm at a loss! Anyone have any ideas?

Thanks!

 

[carman9941]

put a filter sock on it

 

[BenjieC]

<a href=showthread.php?s=&postid=8169821#post8169821 target=_blank>Originally posted</a> by carman9941
put a filter sock on it

That would kind of defeat the perpose of overflowing it into the display. Also a filter sock probably wouldn't look too good in the display.

 

[whiirly]

Not exactly sure by what you mean that the fuge drains into the display?is the sump above the tank?any baffels in the fuge?
place the return line under the water level
add some LR to the sump to help break up the bubbles
you can also go with a much smaller pump

 

[ostrow]

Joe he must have a separate sump. He has the fuge drain going directly into the tank.

Whatever you do don't use a filter sock. That is bad for myriad reasons in this application.

Is the return from the fuge submerged in the display? If it is above the water line you have no way to avoid bubbles! What sort of bubbles? Microbubbles or larger ones?

 

[BenjieC]

The display overflows into the sump. Which then goes up to the fuge(separate tank)The fuge is above the main display overflowing into it.

 

[BenjieC]

Larger bubbles. It's droping about 6" to the display.

 

[ostrow]

<a href=showthread.php?s=&postid=8171287#post8171287 target=_blank>Originally posted</a> by BenjieC
Larger bubbles. It's droping about 6" to the display.

There's your problem. Submerge it.

 

[BenjieC]

<a href=showthread.php?s=&postid=8171387#post8171387 target=_blank>Originally posted</a> by ostrow
There's your problem. Submerge it.

Still come out when submerged.

 

[ostrow]

Can you post a picture? Need to see what that drain line looks like and what it looks like in the tank (when submerged). How does the water enter that tank?


What is the size and location of the bulkhead on the fuge? How does water enter the drain line, what is the intake like in the fuge? What size tubing or pipe going to the display? What size nozzle or whatever where the water enters the tank?

Are there bubbles where the return goes into the fuge from your sump? Somehow, air is getting into the drain line in that fuge.

You should see my thread on fuge flow problems. Probably similar. Do you have problems keeping the fuge water level constant? What happens when the return pump is turned off then back on? Does the level rise to risking overflowing?

 

[BenjieC]

<a href=showthread.php?s=&postid=8171466#post8171466 target=_blank>Originally posted</a> by ostrow
Can you post a picture? Need to see what that drain line looks like and what it looks like in the tank (when submerged). How does the water enter that tank?


What is the size and location of the bulkhead on the fuge? How does water enter the drain line, what is the intake like in the fuge? What size tubing or pipe going to the display? What size nozzle or whatever where the water enters the tank?

Are there bubbles where the return goes into the fuge from your sump? Somehow, air is getting into the drain line in that fuge.

You should see my thread on fuge flow problems. Probably similar. Do you have problems keeping the fuge water level constant? What happens when the return pump is turned off then back on? Does the level rise to risking overflowing?

I built an over flow into the fuge and put a 1" bulkhead into the side, not the bottom. But now that we are to talking about this I just realized that if I put a 90 pointed down it would keep air out of the line and I can just submerge the line like you suggested. I was going at the situation by trying to deal with the bubbles at the display end instead correcting the problem. Thanks for talking me through this!!:thumbsup:

 

[ostrow]

I tried this and it overflowed my fuge. In fact, things are still unstable in mine. I have the same problem with the bulkhead in the side. Is yours loud, too? Must hiss, gurgle a lot if you have no durso there. A durso would solve the problem for you if you can rig one. I could not.

 

[BenjieC]

no its as quiet as a mouse although it only overflows 1/2"

 

[BenjieC]

really low flow too. 100-200 gph for a 1" bulkhead.