My CPR Lifter pump has died I need help

[flower]

Quote:
Originally Posted by lbannie http:///forum/thread/384427/my-cpr-lifter-pump-has-died-i-need-help#post_3367520
Not to chime in late, But I have a CPR overflow box and I don't use a lifter pump at all....... What does the lifter pump do? The only pump I have is in the sump for the return flow.....

It keeps the siphon in the event of a power failure. It's important to me that the overflow and return run simultaneously or either the tank could overflow or the sump. A flood from either one is not anything I want to deal with. On my seahorse tank I deliberately kill the power to stop the pumps so my horses can eat, they are very slow.
I have all my pumps on a single power strip so a push of the buttom and everything stops.

 

[2quills]

Quote:
Originally Posted by lbannie http:///forum/thread/384427/my-cpr-lifter-pump-has-died-i-need-help#post_3367520
Not to chime in late, But I have a CPR overflow box and I don't use a lifter pump at all....... What does the lifter pump do? The only pump I have is in the sump for the return flow.....
It just primes the overflow without having to do it manually. And it just maintains the siphon while things are running. It isn't a "must have" but cpr recommends it. According to the representative that I spoke with over there the safest way to run your overflow is with the aqua lifter, the second safest was to hook up a tube from the overflow to a powerhead as mentioned above and then submerging the end of the airline tube under water in the tank or backside of the overflow.

 

[meowzer]

Quote:
Originally Posted by Flower http:///forum/thread/384427/my-cpr-lifter-pump-has-died-i-need-help/20#post_3367524

It keeps the siphon in the event of a power failure. It's important to me that the overflow and return run simultaneously or either the tank could overflow or the sump. A flood from either one is not anything I want to deal with. On my seahorse tank I deliberately kill the power to stop the pumps so my horses can eat, they are very slow.
I have all my pumps on a single power strip so a push of the buttom and everything stops.
Flower I can pull the plug on everything, and as soon as it starts...so does the siphon....I have no aqualifter

 

[flower]

Quote:
Originally Posted by meowzer http:///forum/thread/384427/my-cpr-lifter-pump-has-died-i-need-help/20#post_3367534
Flower I can pull the plug on everything, and as soon as it starts...so does the siphon....I have no aqualifter
All I know is that if the lifter isn't working my water level rises and rises until it overflows from the tank. Its so on my 90g and the 30g. If I didn't need the lifter that wouldn't happen would it? I have those Ehiem pumps on the return lines..do you think they are too strong maybe?

 

[2quills]

Quote:
Originally Posted by Flower http:///forum/thread/384427/my-cpr-lifter-pump-has-died-i-need-help/20#post_3367547
All I know is that if the lifter isn't working my water level rises and rises until it overflows from the tank. Its so on my 90g and the 30g. If I didn't need the lifter that wouldn't happen would it? I have those Ehiem pumps on the return lines..do you think they are too strong maybe?
Your pumps are a little stronger than need be, yes. But the difference between the two overflows is that Meowzers was designed to be run without a pump, where your was designed to run with the pump, which is why it has the nub on top for the tubing. Even though you can run them without a pump, it's not recommended. But if you do want to run it without a pump you'll have to close off that nub and make it air tight. You can either cap it, or hook up a tube and submerge the other end so that no air gets in it. If I were in your shoes, Flower I would stick with the pump. The U-tube style overflows are a little bit better designed for maintaining the siphon on thier own but you still need a pump to prime it when you set it up, unless you want to suck the air out of the tubes manual (which tastes gross, btw). But even the U-tube style overflows are prone to air build up as I'm sure Meowzer can attest to if something happens to be off with the system.
Each have their pros and cons. Lots of people prefer one over the other for their own reasons. Only way around the issues for either one is to get a drilled tank.
Edit: In addition, if your overflow isn't keeping up with the pump when the aqua lifter goes off then you might want to turn the output on the return pump down just a bit. It's probably just a tad too strong right now. Because even with the aqua lifter off then the overflow should still keep up. So, yes, I would turn it down just a bit.

 

[meowzer]

YUP....I usually have an air bubble in the top of one tube.....as a matter of fact....we just put a hole in an overflow, and glued in a nipple.....Just did this yesterday, so I have not tried it yet
REMEMBER.....I bought the Aqualifter a few months ago....LOL

 

[lbannie]

On my setup, I drilled 2 small holes in the return line right at the water level, and when I power goes out, or I turn off the sump to feed, the water will start to flow backwards(causing tank overflow!) But because of the 2 hole, once the water goes below that, it sucks air and the siphon stops. When the power returns, everything goes back to normal. Sometimes I have to suck out some air out of that tube on top of the overflow box Before I made the holes I wanted to see what happened in case of power failure and I overflowed everything out of the sump!!! Now I don't worry.......too much

 

[flower]

Quote:
Originally Posted by lbannie http:///forum/thread/384427/my-cpr-lifter-pump-has-died-i-need-help/20#post_3367627
On my setup, I drilled 2 small holes in the return line right at the water level, and when I power goes out, or I turn off the sump to feed, the water will start to flow backwards(causing tank overflow!) But because of the 2 hole, once the water goes below that, it sucks air and the siphon stops. When the power returns, everything goes back to normal. Sometimes I have to suck out some air out of that tube on top of the overflow box Before I made the holes I wanted to see what happened in case of power failure and I overflowed everything out of the sump!!! Now I don't worry.......too much

LOL...Corey (2Quills) and Shawn (Acrylic51) designed my system on the 90g and I copied it for my 30g only on a smaller scale. They had the back syphon all figured in the calculations. The only time I have any worries is if that lifter pump is not working. I watch them very close.

 

[btldreef]

I definitely recommend that little pre filter canister. I have one on my lifter to work with the CPR. My CPR barely works if I don't have the lifter running. Place a tiny piece of foam in the canister, you'll be amazed at the stuff that thing can collect.