Howdy folks! So Yawara

and Taro

seem happy with their upgrade to a 60 gal (Yawara FINALLY started growing in November (and hasn't stopped since!)) It doesn't get nearly as dirty as the old tank. I try and stay on top of scooping waste as much as possible, but I am having one problem - a lot of their waste (including shed skin) is hanging out on top of the water. I suspect part of it is the fact that I didn't do the recommended and get a filter STRONGER than the tank size (I think y'all usually recommend 2 or 3x stronger, right?) Unfortunately, getting a Rena Filstar that just fit my tank was all I could afford. Also the tank stand I have may not fit a bigger canister...
Until I can upgrade the filter, what can I do to control the nastiness atop the water? When I try to scoop it with the net, it floats a way, though I can get some of it when I do partial water changes. Thanks all and Happy New Year!