natclanwy
Active Member
Originally Posted by salty blues
http:///forum/post/2577483
Do the u-tube style overflows have vent/ports to keep air pulled out(by using a powerhead). The priming instructions on the eshopps say to bend and stick a piece of tubing into the u-tube to suck the air out.
And as I stated previously, I have never had my cpr cs50 lose siphon. Mind, I do keep a constant pull on the purge port with a maxi-jet 1200.
No they don't have vents that why you have to use a piece of tubing to start the overflow. They are completly sealed so they will never lose their syphon unless air is introduced so no need to have a pump pulling on them all the time. I never lost syphon when I had the CPR overflow hooked up either I ran the aqualifter pump on it but when the power would go out for long period the DT would just about overflow before the aqualifter pump would catch up and restart the syphon so I was always nervous about it overflowing.
http:///forum/post/2577483
Do the u-tube style overflows have vent/ports to keep air pulled out(by using a powerhead). The priming instructions on the eshopps say to bend and stick a piece of tubing into the u-tube to suck the air out.
And as I stated previously, I have never had my cpr cs50 lose siphon. Mind, I do keep a constant pull on the purge port with a maxi-jet 1200.
No they don't have vents that why you have to use a piece of tubing to start the overflow. They are completly sealed so they will never lose their syphon unless air is introduced so no need to have a pump pulling on them all the time. I never lost syphon when I had the CPR overflow hooked up either I ran the aqualifter pump on it but when the power would go out for long period the DT would just about overflow before the aqualifter pump would catch up and restart the syphon so I was always nervous about it overflowing.
