Need to choose pump

[HeXoM]

Hey fellas, I had some help with a tank I wanted to drill and customize but I found a place that will make my life easier and my pocket lighter lol

So, I just ordered my custom 50G Tall tank from glasscages.com and it should be here in about 2-3 months. I ordered a little late
I might as well start making my stand and getting everything i need before it gets here.

I need some help deciding which pump to get for my return.
The overflow thats built in rates at 500gph on a 1" bulkhead. Does that sound right, I've herd 600?

I'll be having a 20 gallon long refugium, with a skimmer that works at 500gph.

But I'm not sure what return pump I should get, more like which flow rate i should be returning when my return system is a bit complicated.
I was thinking of getting a Mag Drive 9.5 with a ball vavle, but is that overkill?
Because I feel like I would have a lot of head pressure.

Look at the example i drew up and tell me what yall think?
The return is going to 3/4" by the way.

[domjd05]

quiet one pumps are always nice.. I wouldn't bother paying extra for a ball valve, those are peanuts at any hardware store. I would worry more about getting a good check valve for flow back.

I think 1 1/4" is rated for 600 through the application you are talking about if I'm not mistaken..

Get a pump thats at least rated for 500 gph, AT LEAST. You need to factor in how much lift the pump has to provide, and then how much gph you'll lose due to that lift.

I would think 750ish would be ok. Try to get a hold of a friends or something to try out first.. I bought my first pump for my built in overflow and it was too powerful for it, completely draining my sump before the overflow could put enough water back into the sump! Lol.

[Crispy]

agreed. you'll want to measure what the head height will be and factor that into your choice. Most good pumps have a chart on the box showing gph/head height. You wanna shoot for 400-500gph. Probably a 750gph will do the trick.

[HeXoM]

So I called up glasscages.com and said the drain rate is 500gph.

So if i get a Mag Drive 7, which rates at 700gph, i'll be fine and dont need a ball vavle?

Would you guys recommend getting this check vavle?
http://www.marinedepot.com/Swing_Che...FT9044-vi.html

So with all the head pressure from the fittings, the check vavle and about 4 feet of tubing, 700gph will be enough?

[Crispy]

How high will the return hafta pump? 2-3' will make a 700gph pump work good for you.

[HeXoM]

Well i should be having about 4 feet of tubing. I hope less.
Is there something i could do about this?
My stand is 30" and the tank is 17" high

[Crispy]

4' with 700gph should be fine. you want your filter to pump slightly less than your overflow can drain.

[HeXoM]

Well I'm getting at AquaC EV 120 skimmer with a Mag Drive 5 pump (recommend by manufacturer).
My overflow is working at 500gph, my skimmer is at 500gph, and the Mag drive & at 700 with 4 feet of head pressure.

Does that sound good?

[Cliff]

You many not need a check valve at all.

You might be able to size the baffles in you sump to be able to handle all the blackflow should you loose power and water drains back into your tank. If you add a stand pipe to the drain, you will limit the amount of water draining into your sump from the overflow should the power go out as well as make it a lot quiter (at lot less noise). I've got one on my 90 gallon and it makes a world of difference (link below).

http://www.dursostandpipes.com/make-your-own-diy

You might want to think about those options before adding a check valve, just a suggestion.

[HeXoM]

^Oh, the dusro pipe.
Ya, I'm getting that for sure. I've seen a bunch of youtube videos on those pipes. I'm ordering it from the same guys lol

http://shop.dursostandpipes.com/inde...bb51b5b8b48a77

I really don't want to hear the water splashing 24/7


So there is really no point in having a check vavle if my sump can handle it?