Return Pump Help

DB9181

DB9181

New member
Getting ready to start setting up the new 75gal. Going to be running a 29gal custom sump/fuge w/ an external (In-Stand) ETSS 800 Skimmer.

Thinking about also doing 1" drain and 2 .75" returns on either side for a more uniform look and alil flow from both sides by creating "T" split off my pump line.

Was hoping to use a Mag-7 that I have laying around. Looking at specs online, it apears: GPH at 5': 390
View attachment 6498

Would this work? Hoping that it will do the job as I rather not get another pump right now. My buddy was using a Rio2100 previously.

Let me know your thoughts....
Thx
 
That's a bit weak. 5x turn over. I usually aim for 10x on the return pump. Plus 10x in power heads as well.
 
I would also make the overflow larger. Or make 2 of them.

1" usually safe to run around 600gph. 1.25" up to 1000gph and I usually run a bit large if your only doing 1 drain because if it decides to clog up or a large snail goes in, your flow can get reduced and you run the risk of the tank actually over flowing in the floor.
 
Alright since a Mag 7 is on the small end... how bout an 'off-brand' 1000gph pump for $50 (free shipping)
http://www.ebay.com/itm/1000-GPH-Su...619?pt=LH_DefaultDomain_0&hash=item43af2ebccb

It has a 1" output. People were mentioning to do larger holes (not 1" drain and 2 .75" returns), thoughts on the sizes? I will probably just end up ordering the bulkheads and cutting bits from glass-holes.com since it doesn't seem like many people have bits available, and currently do not have a way to transport the 75g to someone's house for drilling.
 
The link you posted is actually a private label Rio. You're getting a Rio3100 basically without paying for the Rio name.
 
Exactly, just not paying for the name (which im fine about) my question is if it is sufficient for the job.
 
Most definitely. Sump turnover is 4-9x display tank volume. You don't want to use your sump return for flow in the DT. You want it for filtration only. If water is getting rushed too fast past your skimmer/fuge, your just keeping detritus in the water column.
 
You can just split the return over the tank. Have a T at the top of the return and it will have the same effect without having to drill any extra holes.
 
Too late for YOUR holes, lol I havent drilled mine yet. Is 1000gph too much?

I already have a mag-7 laying around, so if 700 will cut it for 2 returns I can just use that but several people were saying that was on the low end...
 
75*9= 675 gph A 700 gph pump is plenty. That 9x is the high side. Sump returns are just for surface agitation and filtration, not flow in the main tank.
 
well then it doesnt look like a need another pump :)

Alright size of the holes .... I would like 1 drain and 2 returns - was thinking 1" drain in the middle, 2 .75" returns on either side, does that work? someone said that I should go larger to support the amount of water flow...


Also my skimmer WILL NOT be in the sump/fuge, its an in-stand skimmer - ETSS 800 powered by a 55 RLT Iwaki
 
a 1" drain, unrestricted, will easily handle a Mag7 split. I wouldn't worry about much more. Especially considering head loss.
 
My 110 has two 1" holes, not much more than what you have now. And my return is going to be a Mag9 or equivalent. More overflows/returns just helps to get more water from more sources moving.
 
You must log in or register to reply here.
Back
Top