Well I have a surface skimmer that is currently hooked up to the fluval
tubing, and it does actually fit but the skimmer came with this dorky tube
to connect it with and I don't really want to use it. I would like to
eventually hook up an external CO2 reactor and I didn't think it would be
possible with the plastic scuff, but if they sell the rubber end pieces then
I would probably be okay. I was primarily looking for a replacement though
because when I was installing the filter my cats chewed on the tubing a bit,
it has some teeth marks but has been water tight so far but for how much
longer I don't know.