HOB refugiums ... do they work?

[pc604]

hi darryl,

if i do go the hob fuge route, i only have enough room on my 20 gallon to fit an AC300 (too much other stuff hanging off the tank). so i'm not too sure if it'll be as effective b/c the AC300 is quite a bit smaller than the AC500.

i'm off to home depot now to pick up a fan. it was so bloody hot today in van.

thanks