I really don't see the Chaeto competing with a skimmer to the point of handicapping its performance much.
Seaclones have... er...a reputation for being... er, well... challenging shall we say, to get any consistent quality or quantity of skimmate out of.
If you put an Aqua C Remora on a tank with a Seaclone... you will be converted my friend
That Aqua C model is categorically the best HOB skimmer IMO at any price and also happens to be a good value. FWIW
Anthony