ASM G-1x is my recomended skimmer for that app. www.asmskimmer.com sells them modified to be even more efficent as a recirculating skimmer with a gate valve, and a feed pump. The needle wheel makes great bubbles and its a quality skimmer at a good price.
if you are on a budget, I have had good luck with a seaclone 100. i have to empty the cup every other day and so far it has been maitanence free.
some people have had problems with them but i haven't seen it.
Hey, I'm sure you've already decided, but I wanted to give one more thumbs up to the ASMs...I have four of them and if I were to need another skimmer tomorrow I'd buy a fifth!
HTH