NEED HELP! What size pump do I need???

[cital]

I am going to set up a 60gal reef tank, 48x15x18. I plan on having mostly mushroom, polyps, soft corals, etc. I will have a center overflow and 2 returns, one in rech rear upper corner. I plan on using regular 3/4in tubing for all the plumbing connections. The stand will be 30" high, so there will be 4ft in overall height. I plan on running a line up from the sump to a Y fitting to split off to each return. What size pump will I need to have good flow in the tank??? I plan on buying a mag drive pump and I am thinking I will need a mag 12, 18, or 24??? Thanks for any help/advice in advance.

 

[shag26272]

how big is the drain line? I wouldnt try pusing that much water through your sump, Use a smaller pump for your sump/return and powerheads or a closed loop for flow