Overflow box, safe or risky?
- Thread starter LiveRoker
- Start date
That is the design of any decent U Tube overflow. As long as there is sufficient velocity through the U Tube, bubbles do not collect. LR does do it a little better than most. The skimmer box is deep which creates more pressure.
Totally unnecessary because of above. All you are doing is adding a vacuum leak when there was none before. This will increase the likelihood of a failure.
I'm running 3 cpr overflows with a small $10 vacuum pump on each one. The vacuum pumps are in the basement just above the sump. If the pumps fail the water in the line creates the suction as it falls to the sump below. I've turned the vacuum pumps off and it does work without them. If I cause one to fail the other two pick up the slack. I haven't tried turning two off yet. The overflows are noisy. The next thing I'm going to do is insulate them with hard foam board to reduce the noise.
1SickReefer
New member
I would be very leary of anything that uses a "small 10 dollar pump" to stay working correctly.
So far no problems. Will have a surfboard ready in case you're right.
I did test failure modes (vac pump quits, one overflow quits) and the system continued to work. CPR does list gravity as one method of keeping the flow going. I have gravity and the pump working for me plus a backup overflow. Thanks for your concern. Just in case, what other hang on overflow can handle 1200gph?
I did test failure modes (vac pump quits, one overflow quits) and the system continued to work. CPR does list gravity as one method of keeping the flow going. I have gravity and the pump working for me plus a backup overflow. Thanks for your concern. Just in case, what other hang on overflow can handle 1200gph?
LOL. You know what I meant. :lol:<a href=showthread.php?s=&postid=6664325#post6664325 target=_blank>Originally posted</a> by rm
"I'd be very leery of anything that needs a pump of any type or cost to stay working correctly."
I've never seen a tank without a pump. Maybe a goldfish bowl.
I did but couldn't stop myself
FYI CPR's were basically given to me by lfs because of all the worries people have about them quitting. That is why I'm running a backup and why I use the pump plus gravity. I have not been able to make it fail. Other problem was the lack of high volume u tube overflows.
FYI CPR's were basically given to me by lfs because of all the worries people have about them quitting. That is why I'm running a backup and why I use the pump plus gravity. I have not been able to make it fail. Other problem was the lack of high volume u tube overflows.
