:rbwwelc:to RS ! We love pics...
many have had success running as you listed...
Top level : floss sponge and square black Sponge.
Middle level:a bag of purigen
Bottom level: a bag of chemi pure
if you don't have a "water level window on the left side..." you have the RSM 130 tank, the RSM 130D (deluxe) added the window... and the adjustable skimmer cup - the 130 had a gate ... it can be added to the 130
with a new 9001 you will want to tune the water level to what works best with it... I ran the stock skimmer & to get it to perform, had to keep the water level window, at the top line & top off ever other day... keeping the water levels stable is key for all skimmers and that requires an ATO or...