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Discussion Starter · #1 ·
which eheim return pump should be fine for 35 gal cube (20x20x20) reef with 10gal sump.

Looking for eheim because of its quite than Mag pumps.. any other pump options that are quite but not too costly?
 

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Just some guy, you know?
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22,978 Posts
I've heard good things about the Ehiem pumps.

Which one you should choose really depends more on your overflow though. How much water do you want to turn over? With only a 10G sump I'd be looking at a low turnover rate. I had a 50G with a 10G sump and I turned over about 150GPH, that worked nicely for me.

Whiskey
 

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199 Posts
Discussion Starter · #3 ·
height should be 3 ft.....mine will be 28 gallon deep blue tank with 10 g sump....
 

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Hydro-Dynamic
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13,149 Posts
Planning to buy EHIEM COMPACT PUMP 1000 , lets see how it goes...
I put one of their compacts on my 46 bow front, the biggest one they had 5000+.
I can't remember if I was multitasking that pump or not but…
it failed to pump water back up into my tank.
Took it apart, cleaned, dried it out like new and returned it.
Their hobby pumps are better than the compacts.
The 1250 looks to be ~230 GPH @ 3' (straight PVC no fittings)
 

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Hydro-Dynamic
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13,149 Posts
Get your simple math out and search engine and compare
Compact flow charts.
The Eheim Compact 2000 LPH pump at 3' (0.9 M) appears to be <6 GPH
EDIT!!! 6 x 60 mins to hours my fault= 360 GPH for the 2000.
(disregard the blue marks, that's from another forum)

Starting out at 0' head pressure the 1000 is rated for 267 GPH
and a grand total of about 6.5' head. Unfortunately you cannot just
half the rate at 6' to come up with a 3' ball park idea.
Some pumps really lose head faster than others, the compact
I'm afraid is one of those pumps. They just don't hold their head well.
 
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