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Old 09-30-2010, 10:15 AM   #1
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Post 3/4" Overflow- Which return pump?

I have a 10G nano and I drilled it- I made a small 2-1/2G sump for it my overflow is 3/4" inch just wondering what size pump would work?

I've been looking at the 404 and 606 mini jet, but I also have been looking at the New Pico Hydor Evolution 1200 that put's out 300GPH? I believe the mini jet puts out up to 180GPH just for the 606? Any help or suggestion would be appreciated...

Thanks
Frankie
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Old 09-30-2010, 11:19 AM   #2
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Smaller pumps are a bit tricky to size in this case. It is going to really be affected by the heigh difference between the sump and the tank. Is the sump below the tank and how far below if it is?
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Old 09-30-2010, 11:32 AM   #3
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The evolutions do not have a normal output, they are wide grate, nowhere to hook up a tube. I think you will be in the Mini Jet or possible Maxi 400 range.
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Old 09-30-2010, 04:40 PM   #4
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Quote:
Originally Posted by pat8you View Post
Smaller pumps are a bit tricky to size in this case. It is going to really be affected by the heigh difference between the sump and the tank. Is the sump below the tank and how far below if it is?

The sump will be right behind the 10G basically sitting on the same stand.
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Old 09-30-2010, 06:21 PM   #5
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3/4 overflow can take 800gph+,as there is minimal height restrictions I would go with something like a 150gph pump.
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Old 09-30-2010, 06:44 PM   #6
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Old 09-30-2010, 09:32 PM   #7
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3/4" pipe can't take 800gph. A 1" can handle about 600gph.
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Old 10-01-2010, 02:36 PM   #8
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fishguy,3/4" pvc can take 660gph just on gravity flow,sorry my mistake,its on the pump side its well over 800gph

here's the info I use
GPM/GPH Flow based on PVC Pipe Size, ie, How much water can flow through Sch 40 Pvc Pipe Size 1/2" 3/4" 1" 1.5" 2" 2.5" 3" 4" 6"
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Old 10-01-2010, 05:08 PM   #9
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Doesn't match what I had heard, but looks good. Thanks for the link.
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Old 10-01-2010, 06:01 PM   #10
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No problem
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Old 10-01-2010, 06:24 PM   #11
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3/4 go with 500-700 gph pump.
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Old 10-02-2010, 05:34 AM   #12
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3/4 go with 500-700 gph pump.
I don't know about using a pump that size with such a small tank and sump
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Old 10-02-2010, 06:49 AM   #13
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I don't know about using a pump that size with such a small tank and sump
i was just following the chart.

10gallon with a sump? u should of use 1/2 pvc or hose.
for a tank that small i would use a 200-270gph pump.

270 if ur tank is standing up high, 200 if ur tank is only 24inch above ur sump.
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Old 10-02-2010, 11:01 PM   #14
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The 3/4" is fine going from your overflow to your sump. I'd use 1/2" from your sump back into your tank, and I really wouldn't think you'd need much more than 150-200 gph. At 200 gph you're doing 20x your tank volume, but it really does depend on what you have in the tank.

There's a pretty good pvc flow rate chart at http://flexpvc.com/WaterFlowBasedOnPipeSize.shtml. It's for flexible tubing, but it should be somewhat similar for standard pvc.

As always, whatever you put on the return should include a ball valve. That way you can adjust your return to make sure that your overflow can keep up.
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Old 10-04-2010, 10:47 PM   #15
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Well I went ahead and ordered the Evolution Pico 1200 which pumps out 300GPH... This pump worked out great- I have two overflows one for my Fuge--- Here is what my design intails too...


I inserted the sump right behind the 10G nano since I wanted something smaller because I was thinkin too big...lol

The fuge

both overflows..

pico 1200 evo
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Old 10-05-2010, 08:55 AM   #16
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I fail to mention that I've had this up for a week now and it's been running awesome... Just top off every other day not a huge heat producer..
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