The Reef Tank banner

1 - 5 of 5 Posts

·
Registered
Joined
·
472 Posts
Discussion Starter #1
I am in the process of getting a 75 gallon tank with a 30 to 40 gallon sump. Is a mag 7 good enough or should I go bigger? What is the advantage or disadvantage to going with a bigger pump? Thanks
 

·
Premium Member
Joined
·
4,947 Posts
depends on the flow rate of the overflow. Mag 7 is 700 gph give or take. Are you using hang on style overflow box, or are we talking drilled and built in overflow?
 

·
Registered
Joined
·
1,370 Posts
I use a mag 5, even though people told me to move to a bigger pump here is my reasoning for staying with the mag 5;
i wanted the water to be in the sump a little longer so the skimmer (and in sump model) could get to more of it. ALSO wondering whats the reason for a sump if you don't want water in there? its nothing more then a fancy closed loop otherwise.
 

·
Got Crabs?
Joined
·
5,526 Posts
Depends on your tastes really and your system. Lots prefer a slower turnover rate. I prefer to max the overflow GPH so I can get all the crap out as fast as possible. Your skimmer throughput needs to be the same or relatively close to the overflow GPH in order to make a difference. Ex. overflow 600gph, skimmer should be at 600gph give or take 100gph IMO.
 
1 - 5 of 5 Posts
Top