Originally Posted by trigger11
Baffles are dividers that would divide the tank into sections.
HOB stands for Hang on back.
(Which is what your Bio-wheel is actually)
So the only option would be another small tank then really. What are you keeping in the 20G? If having a lot of corals, anenomes and such then would be worth having the refugium. If not then it may be a lot of work to get going.
I have 2 perc. clowns, and 2 blue damsels. 1 emerald crab, 10 or so blue leg hermits, 6 or so Nassairus(sp) snails, and 1 turbo snail who still won't come out of his shell. I'd like to keep some corals eventually, but that is still about 3 months away. I do have a coralife light, and have been keeping my calcium at over 400, so my tank will be ready when it get them.