Mojo,
Is the only difference between an external skimmer and an internal skimmer the fact that one is in the water and one isn't? If I get an external skimmer instead of an internal skimmer it really doesn't make a difference, right?
What skimmer would you recommend, preferally external if it will be just as good as internal, for a 120 gallon reef with a 40 gallon sump?
Stocking will be 2 tangs, a few wrasses, goby, pair of clowns, mag foxface, and maybe a gramma or some other smaller fish down the line.
I was thinking maybe the SRO-2000ext but was wondering about the ATB 870 and some of the other skimmers.
Thanks