A 2000 GPH pump on a 25g sump??? That seems kinda excessive. I would think about half that flow, 1000 GPH or less. You don;t want fast flow through your sump, as the bubbles then do not have time to remove themselves from the water. I tried a Mag 7 on a 10g sump once, LOL, a throttled back mag 3.5 is what is in there now.
I was just thinking about this the other day, Leah, wondering if your still interestd. I've been so busy with home projects lately, that and still unemploeyd, and EI is taking FOREVER!!!!
For the sump, I would use 4 pieces of glass min. kind of like this
http://mike16b.homestead.com/files/Original_design.jpg
He's got the dotted line one is a piece of eggcrate, I put a piece of glass in there where the water has to go under it into center fuge/skimmer section.
PS I still am hoping to get to Van come Nov 20/22
