if you are still interested on the avast cs1, they all come standard with the recirc kit. it is recommended you use a pump that puts out your tanks total volume per hour. a lot of people use a mj1200, but i plummed mines off of the return line to feed the skimmer. advantage with the recirc skimmer is that you dont have to keep your water level in the sump at a certain level just for the skimmer to function properly. i am sure someone from the club will have a used one for sale, and if you rather buy new, you get a discount with wamas membership. today is only the second day running it and it is already performing like my reef octopus, except on a bigger scale.