designed sump

Hello All, So I'm looking to get a waterbox 60.2DX because the standard sump in my opinion is straight trash. I am having trouble understanding the DX sump for the 60.2 because there is an ATO reservoir in it when I could be using that real estate for a refugium for my tank. (picture below for...

So I have a custom 280 gallon tank being built (Dims 72x30x30). https://www.reef2reef.com/threads/trickman2s-280-gallon-upgrade.369124/#post-4550738 My current sump from my 90 gallon is going to be upgraded. I have looked at trigger systems Triton 44, icecap 48xl. The tank manufacturer is...