Which overflow box and return pump to use?

Well I got my uncle a bigger tank than what he had, a 55 gallon. We are goung to make a sump for it from a 20 gallon tank or a 20 gallon long, do not know yet. I wanted to know how many gallons per hour(GPH) should the overflow box be(500,600,700...) Once that is stablished I would like to know how many GPH should the return pumpfrom the sump be. I was thinking of a Mag 7(700 gph) or a mag 9.5 (950). Any ideas and thoughts would be much appreciated.

This tank will have some soft and maybe lps.

TIA

 

I would get a standard lifereef and the mag9.5. Pretty much any mag from 5-9.5 would be good. If you want to push the overflow to its highest potential of flow then the 9.5 would be your best bet.

 

I went with: Continuous Siphon Overflow Box with Bulkhead

and a Catalina Aquarium CA 2200 Aquarium Pump 850 GPH.

gl!
-Fritts

 

The more flow the better. As long as your fish don't get cought in a whirlpool. But i run 900 gph pump on my 75 and does great. It pushes up about 4 feet so it probably only pushes around 800gph.

 

Thanks everyone for the input. I was originally thinking of going with that overflow box you posted fritts and maybe a mag 7. Karma to all. Thanks.

 

Just a heads up, if you order it from aquatraders (i'm a huge fan of them) shipping is a bit slow. So don't order it needing it in 2 days cause it will show up in about 5.

Also, the box is not dark like that.. mine was clear.

-fritts

 

John do you recall how much shipping was??? Cause I can get it on ebay(the same one for $50 shipped)

 

Shipping & Handling: $16.90
Tax: $0.00
Order Total: $46.80

 

What would bea good glue/adhesive to use to glue acrylic to glass for the sump/refugium???

 

It's not suggested to "glue" acrylic to glass because of component issues and weight and then glues not sticking..

HOWEVER.....
I used a GE sealant made specifically for acrylic to glass. I don't remember the name but remember it was in a red tube and sold by the acrylic area of my lowes.

Don't do it, unless your willing to spend the time understanding what is taking place. There is still a failure rate for glass to plastic sealant and thats specifically why i have my setup running outside for a few days to test it before putting it into production.

goodluck!
-fritts