Turn sump ATO resevoir into refugium

[HeyJay]

I'm considering buying the Icecap 36XL sump, but I'd love to be able to use the built in ATO compartment as a refugium (~12 gallons). The actual fuge area doesn't offer a lot of volume since it's restricted by the skimmer water level.

There's one tiny hole for an ATO pump outlet, but the idea would be to cut a much larger opening so water can flow through, and feed it from a tee off the drain.

Does that seem feasible, and what would be the best way to cut it (or drill a few bigger holes)?

 

[susan ingram]

Imma Give you a BUMP

 

[HeyJay]

If it makes things more clear, the ato pump outlet is circled in red, and I'd like to create an opening across where the yellow circle is

 

[Davy Jones]

If it makes things more clear, the ato pump outlet is circled in red, and I'd like to create an opening across where the yellow circle is

Honestly I am considering pretty much the same thing. Instead of cutting as shown,I would want to remove the wall that is there between the fuge and ATO