TINY sump tank, is it worth it?

[Lampshade]

I have a 55gal set up right now, in my 10 gallon sump i'm haveing a big problem keeping my max fill/on cycle calibrated. I filled the tank/sump with all the pumps off, it sat full, so this is my "max fill" when i turn on my pump/protein skimmer my sump level drops enough to cause the pump to occasionally suck air. I strongly suggest going with larger than 10 gal. for your sump.