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Old 01/02/2011, 06:08 PM   #1
drew930
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what kind of return pump for a 40 gallon

Had a 75 gallon ..had a bad tang experience so i want to.switch to a 40 gallon.. I want a quiet pump that don't run much electricity that would do good. Also.. what size pvc. Any ideas ?


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Old 01/02/2011, 06:29 PM   #2
doobie
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There are a lot of pumps. I still find Mag Drives quiet enough, affordable and most of all reliable. I need to change my sig, I switched out the Eheim for a Mag 3.

Chart: http://www.marinedepot.com/powerhead...upreme-ap.html


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Old 01/02/2011, 06:48 PM   #3
drew930
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Okay .. so a mag 3 isn't too powerful ?


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Old 01/02/2011, 06:59 PM   #4
fishsuse29
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I run a mag 7 on my 40 breeder with a 20L sump and its about perfect. I wouldnt go any smaller than the 7 as i already have to dial back the return to match up with the mag 7


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Old 01/02/2011, 07:06 PM   #5
drew930
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Well I was going to use a 20L sump so that's perfect... what size PVC did you use...and is a swc-bmk 150 to big for a 40.. used it on my 75 but don know if I can switch or if I buy a new one


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Old 01/02/2011, 07:53 PM   #6
doobie
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Did I really type 3? I have the 9, I guess it's really 9.5. The 7 should work for you. I've had several 7's - a great pump.


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Old 01/02/2011, 08:28 PM   #7
pwwfish
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I run Eheim 1262 on my 65 gal. but Ocean Runner pumps are less expensive and also energy efficient. 630gph and only 38W.

http://www.aquacave.com/ocean-runner...amedic-31.html


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Old 01/02/2011, 08:32 PM   #8
drew930
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So when I get a pump do I just use 3/4" for return and inch for drain or what


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Old 01/03/2011, 08:51 AM   #9
sslak
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Quote:
Originally Posted by fishsuse29 View Post
I wouldnt go any smaller than the 7 as i already have to dial back the return to match up with the mag 7
What?

If you dial back the return (output from the mag7 pump) that means you actually should go with a smaller pump...you're wasting wattage.

Your statement makes no sense...did you mean you have to dial back your drain to match the mag 7 return? You shouldn't have to if your overflow is built correctly...

I run a Mag 7 wide open on an Oceanic 58, it's a decent pump, affordable, and fairly quiet.


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Old 01/04/2011, 01:48 PM   #10
fishsuse29
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Quote:
Originally Posted by sslak View Post
What?

If you dial back the return (output from the mag7 pump) that means you actually should go with a smaller pump...you're wasting wattage.

Your statement makes no sense...did you mean you have to dial back your drain to match the mag 7 return? You shouldn't have to if your overflow is built correctly...

I run a Mag 7 wide open on an Oceanic 58, it's a decent pump, affordable, and fairly quiet.
I ment the return from the tank aka drain line and i only dial it back a little its probably at about 85-90% flow.

For the mag 7 i use 3/4 inch flex tubing. I also run the swc150bmk i just got it set up so im still dialing it in. It seems alittle much for my lightly stocked 40br (I was skimmerless before and had no N or P). But once i add some more fish it should be perfect sized


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Old 01/04/2011, 04:29 PM   #11
drew930
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oKay.. cool let me know how your skimmer turns out and what will happen if its too big ?


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Old 01/04/2011, 06:46 PM   #12
malawinovice
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eheim 1250 is a great quiet pump. For 4 ft of head will circulate 200 gph, right amount for 40 breeder.


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Old 01/05/2011, 08:22 AM   #13
fishsuse29
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Quote:
Originally Posted by drew930 View Post
oKay.. cool let me know how your skimmer turns out and what will happen if its too big ?
Will do. I'm no skimmer expert but what ive noticed with mine is when I'm around and feeding every day it skims great. But with the holidays ive only been feeding every 3 days or so and by the third day the skimmer is not producing the same thick dark foam it usually does. This leads me to believe that its skimmed out all of the excess nutrients, since it is oversized for the tank. while a smaller skimmer might produce more consistent results with the same bioload but not be able to keep up once the bioload increases.

However I am happy i went with the larger size as I know i will always have more head room once i add more fish or if i get lazy with water changes etc.


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