Sump Size

[gixxer600]

What is the minimum size sump recommended for a 125g. I know fit largest one possible. But I am real limited on space.

[Psyire]

I'd make it as big as you can fit. I would say 20g at the very minimum.

[Sindjin]

Im using an old 50 gallon under my 120.

[thrlride]

How much space do you have to work with? I am able to fit a 30 gallon under my 90 gallon tank. I am putting a 75 under the 180 I am planning.

[Ramble On Rose]

If you are struggling to fit any of 20+ gallon tanks, you may try rubbermaid containers (that are safe to fill with water). They are shaped a little differently and may allow more usable space then a standard aquarium in the space that you do have.

[gixxer600]

I can fit a 30 gal in there. But I did not know if it was too small.

[Reeforbust]

Try this.................

Sump Calculator (http://www.reefcentral.com/calc/sump.php)