DIY Refugium

[Fishineer]

I'm working on a cheap build for a HOB Refugium for my IM 20 Peninsula. Hopefully I will be able to get this build in the next few weeks. This is what I got done so far.

1) Modify Breeder Box. The flange needs to be cut to miss the bulkhead in chamber #1 for the filter sock / media basket.

 

[Fishineer]

This is what is should look like after you use your square drill bit to get the corners square.