WHAT SIZE RETURN PUMP

G

Guppy

I have a 75gal with a hangonback overflow (with a 1" pipe feeding the refugium). What size pump should I get for the return? I guess a mag 9.5 is overkill, huh? I am kinda thinking a mag 5 or mag 7. Gimme some ideas.
 
Without knowing the size of your sump, to be safe I would recommend a mag 5 or equivalent. In my opinion having a large return pump is overkill and often causes problems especially with hang on overflows. Your water flow is better served coming from either a closed loop or power-heads (I use Koralie power-heads).
 
Mag 5 or 7 if like a little extra turnover..... but I would consider a different pump than the mags... they have restart and heat problems... look at a quiet one or eheim instead. They run a bit more (depending on the model) but are more reliable and heat free.
 
@Matt wrote:
How big is your drain? Drain size will help determine the size of the pump needed. How high will you be pumping this water? ie: How high from sump to return nozzle back into display? I would go on a limb and guess a Mag5 would be sufficient but more information is needed to be sure. said:
when you say drain size, I guess you are referring to the 1" pvc pipe that goes from the bottom of the overflow and down into my refugium. The refugium is a 35gal tank that has been converted, so I'd say there will be about 25gallons in it.
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i had a mag 7 on my 40g with no problems , if the pump is too big u will prob get microbubbles.

Mags have always been good for me never had any problems i have 6 of them, as far as any heat any pump puts off that would only mater if it wasnt running 24/7
 
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