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  #1  
Old 01/14/2007, 12:36 AM
schoch79 schoch79 is offline
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Location: portland,oregon
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What pump should I use?

Ok so my long going project now needs a pump for the return from my sump. I plan on only keeping soft corals so I understand I don't need high flow but from what I understand I could also put a ball valve into the piping to reduce the flow. But the real question is, with about 4-5 feet of head should I get the mag drive 5 or the mag drive 7? The 5 has 500gph with a max head of 10 ft and the 7 has 700gph with a max head of 12 ft. Or do you guys have another suggestion for the pump? I was also looking at the "quiet one" pumps and the "ocean runner" pumps because it seems to me to use less watts with equivalent water flow. If I understand right less watts mean less heat so that would be a plus. I don't know which direction to go so your advice is what I will be going with. If you have experience with these pumps that would be great.

Last edited by schoch79; 01/14/2007 at 01:09 AM.
  #2  
Old 01/14/2007, 02:04 AM
TekCat TekCat is offline
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Join Date: Sep 2005
Location: MN
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don't try to make return pump the only source of flow in your tank. too powerfull pump might pull microbubbles from sump, 500gph flow through 20-30G sump IMHO is optimal. The rest of flow in tank could be done using powerheads or closed loop.
  #3  
Old 01/14/2007, 02:09 AM
schoch79 schoch79 is offline
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Oh yeah by the way my display tank is 10 gallons. My intent was to not use powerheads in the display so that I could save some room. However I plan to use a 20 gallon sump because I could easily hide the sump but no room for a 20 display.
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  #4  
Old 01/14/2007, 02:11 AM
schoch79 schoch79 is offline
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Would it still be ok to get the mag drive 7 with the 700gph considering I will have about 5 ft of head? I hope to use this as the only flow in the tank with only soft corals. That would put me somewhere near 400gph after the head right? Even if that is too much flow it wouldn't hurt to just restrict the flow with the ball valve right?
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  #5  
Old 01/14/2007, 02:12 AM
Violet Violet is offline
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Join Date: Dec 2006
Location: Northeast MS
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check out the head loss calc on the home page. It will help you to figure out the real gph you can expect to get out of the pump because it takes in to account the number of L's and T's in your return line.
I am pretty new at this myself, but IMO you need to look at the size tank you are using and how many times per hour you completly rotate the water, also will you have alot of live rock in your display because that will also cut down on direct current. Will you be using any powerheads?
I have heard that you can use a ball valve on a return line, however, I prefer to have the valve on my overflow linw because if it is inline with the pump it would seem logical that overtime it would cause a strain on the pump. I make my adjustments on my downflow lines.
This is just my opinion, Ask around and get different setups.
  #6  
Old 01/14/2007, 02:57 AM
schoch79 schoch79 is offline
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Ok so I will have a lot of rock and no powerheads. The biggest thing that I'm worried about is if nearly 40gph is too much for a softie tank. Also, are the mag drive pumps any good?
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  #7  
Old 01/14/2007, 09:47 PM
schoch79 schoch79 is offline
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bump
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