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submersible pump for 75g setup
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proskier101 View Drop Down
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    Posted: September 20 2016 at 9:13am

Now that I won a 75gallon tank at MWRF I need to start acquiring parts.


I've been reading about the Eheim comact+ series.

http://www.drsfostersmith.com/product/prod_display.cfm?c=3578+4587+28124&pcatid=28124

I'm thinking the Model3000 as it pushes 792gph. I will have more flow with some power heads in the tank, I'm just looking for something to push water through the sump.  The sump will be a 40 breeder I believe.


Or should I push for the larger pump at 1320gph?


Figure I can use my $25 gift cert. at fostersmith :D (won that too!)
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Mark Peterson View Drop Down
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792 at 9 feet of head will be plenty.
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proskier101 View Drop Down
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Originally posted by Mark Peterson Mark Peterson wrote:

792 at 9 feet of head will be plenty.


ahh so that is how they read that.  I saw "max head height" and was trying to figure out how much pressure is lost up to 9 ft. LOL
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proskier101 View Drop Down
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Originally posted by Mark Peterson Mark Peterson wrote:

792 at 9 feet of head will be plenty.


you think I would be ok with the smaller pump at 528gph?

That way I don't have to dial the pump back in the sump? 7x the tank volume is still quite a bit and the overflow on a 7g5 I think can do 700gph
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Mark Peterson View Drop Down
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Sorry, I read it wrong. Max flow of 792 would be at zero head. Flow at 4-5 feet of head would probably be half of that. The Eheim website is not helpful. It does not have the usual graph of flow x feet of head.

 I always recommend buying a pump that pushes about 50% more than required, throttled back as needed and able to be throttled up as crud grows in the lines. Most manufactured overflows can handle about 5-600 gph

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proskier101 View Drop Down
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Points: 316 		Post Options Post Options   Thanks (0) Thanks(0)   Quote proskier101 Quote  Post ReplyReply Direct Link To This Post Posted: October 02 2016 at 9:26am
Im now thinking of the Eheim 1262

http://www.drsfostersmith.com/Product/prod_display.cfm?pcatid=4604

They have a chart under the "more information" tab.  I think my head height is about 4.5 ft. That sets my flow just over 600 gph which is what my outlet will be. 

Then I can run an excess pipe back to my fuge to control the flow.
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With the eheim 1262. You would diffiently be above 600gph. My brother runs one on his 56g RR tank and the overflow can barely keep up.
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