bubble in overflow tube

[cj7eagle]

I have a tidepool 2 overflow box, and was wondering if it is possible to get all the air out of the u-tube. It seems to be working ok, except that i dont think its getting enough flow. any hints or tips as to getting the air out?

 

[watson3]

Your mouth..Seriously, not flaming..

 

[cj7eagle]

Originally Posted by watson3
Your mouth..Seriously, not flaming..
bah, i was afraid of that response. I have taken enough shots of salt water trying to get it started....

 

[earlybird]

Did you try the airline hose? Doesn't that get all the air out?

 

[cj7eagle]

Originally Posted by earlybird
Did you try the airline hose? Doesn't that get all the air out?
close, but i couldnt get it all out. i still have two bubbles hiding out in there. one about the size of a quarter, the other about the size of a nickel.

 

[gwh57]

I have a small hole in the top of my overflow tube with a airline hose in it. I have an aqualifter pump that pulls all the air from mine 24/7. You can put a check valve in the line too, and only run the aqualifter for a few minutes off a timer.

 

[dmc888]

Easiest way is to start over and take it out try to position the airline at the top of the utube. Sometimes i could get all of the air.
You can wiggle and pull the airline to see if you can get the leftover bubbles.
And get a cup ready to spit in.

 

[cj7eagle]

Originally Posted by dmc888
Easiest way is to start over and take it out try to position the airline at the top of the utube. Sometimes i could get all of the air.
You can wiggle and pull the airline to see if you can get the leftover bubbles.
And get a cup ready to spit in.

yeah thats pretty much the approach i have been taking.

 

[waterworld]

I also had a few straggler bubbles and found that if I inserted an airline into one side of the U-tube then tipped the U-tube with side with the tube higher all of the bubbles collected to the higher side. I then could suck the air out. Any small bubbles remaining seemed to disapate with time into the waterflow.
Good Luck
WW

 

[cj7eagle]

Originally Posted by Waterworld
I also had a few straggler bubbles and found that if I inserted an airline into one side of the U-tube then tipped the U-tube with side with the tube higher all of the bubbles collected to the higher side. I then could suck the air out. Any small bubbles remaining seemed to disapate with time into the waterflow.
Good Luck
WW
cool thanks, i think i will give that a shot.

 

[peckhead]

i just shake it back and forth until it stops. it works everytime

 

[dogstar]

Originally Posted by cj7eagle
except that i dont think its getting enough flow. any hints or tips as to getting the air out?
Needs to be a strong enough flow to pull the bubbles thru....a larger pump will help...

 

[slugg3r]

I agree with dogstar, use a smaller diameter U-Tube or increase the flow and the air will push out of there. You want to match the U-Tube to the flow as closely as you can on the chance any air gets in there you want it to get pushed right out. Makes for a much safer design.