do these things actually work? like do they even have any effect at all? ive been running mine for about a week. and i have a little bit of foam, but really hardly any. it doesnt even look like the foam im used to seeing come out of a skimmer. it seems like the bubbles arent fine enough? i have a diy skimmer that pumps out a whole lot of foam and gunk everyday. is it worth using the seaclone as a hang on to supplement my diy? or am i just wasting electricity?