I'd doubt that a bio-wheel HOB would be able to house enough bacteria to properly keep a few fish long term. I would add https://www.bulkreefsupply.com/sponge-filter-hydra.html as well. This can help add more oxygen to the water and allows for another surface for bacteria to populate.
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My build thread:
http://reefcentral.com/forums/showthread.php?t=2548422
Current Tank Info: 65 gallon mixed reef, Eshopps sump and HOB overflow, RO-110int skimmer, Reefbreeder 32" photons V1.
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