Thanks for the info. The skimmer looks to be performing very well.
I have a 200 coming as soon as Marine Solutions get them, it will replace my ER CS-8-3 that I'm currently running with a Sicce pump.
I use a RMA meter as well and the pump will pull 20lpm but no more after about 2-weeks use and even though I have alot more air going thru the skimmer than before(10-12lpm with Eheim pump) the yield has not improved. The best it can manage is 1-8oz cup per day with the Sicce or the Eheim, go figure, anyway I'm looking forward to the arrival of the new skimmer in a week or two.
BTW, My Sicce pump came with PF-4 not the flatback so that may have something to do with it.