ER RS-80 vs. PM ES100 Venturi Skimmer

[Aquattro]

Originally Posted by Mik_101

id go with a euro reef insted of the PM for a few reasons
cheper, no screw and comes with pump.

Well, ya, there's that too...

[bv_reefer]

unless i find a cheap mag drive 7 for the PM, i'll get the RS80, but just by looking at the pics of both skimmers the PM looks like it has a taller reaction chamber, then again there both 22''.

is there a difference in performance when a venturi is driven/created in the pump as opposed to in the reaction chamber like the PM?