Adding refugium

[ramullins86]

What is the best way to add a refugium to a rs250? I seen where people convert the ato container but I bought mine used and it didn’t come with one. Any input would be appreciated

 

[Ippyroy]

Maybe a HOB refugium would work for you.
https://www.bulkreefsupply.com/advanced-hang-on-back-refugium-large-fiji-cube.html