Scott's 270g aka Project Mayhem

[sphelps]

Originally Posted by Scythanith

Yes but a refugium by nature is already filled with water. So say I cut out the refugium baffle, making the pump chamber that much larger. All I will gain for volume is about an extra 2" in height over a 14" x 12" (minus the emergency overflow 5" x 5"). My calculations come to 1.24g of water. Say I can lower the water another couple inches max!, I'd only gain another 2.6g and would likely start drawing in air vortices and blowing microbubbles everywhere. Does my math make sense to you guys or are you thinking of something I am not?

I still think my only option is a new sump.

You can't be running that sump with the water level only 2" below the overflow? What's the water level height is that sump currently running at?