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Turn sump ATO resevoir into refugium

HeyJay

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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)?
IceCap-36XL-Reef-Sump-99.jpg
 
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HeyJay

HeyJay

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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

IceCap-36XL-Reef-Sump-99~2.jpg
 

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