overflow

Is the tank empty, not set up?

 

not fill yet still empty

 

then get LFS to drill new hole or do yourself and glue another overflow in place. you will need more than 600 gph in a 120. i have 600 in a 55gal :-/

 

Ditto on what he said. Thats what I've been telling all along.

 

The more flow the better. Aquaboy is correct. I am running over 900 gph on a 50 g with 20 g fuge/sump.

 

I run 11,600gph between the sump and closed loop. I have 4 1" bulkheads that run 1 1/4" standpipes that drain to the sump. You need another OF if you are going to keep sps's in that tank or you can plumb you a CL in.

 

is it acrylic?