I woke this morning and darn thing is working just fine -Pump seconday sump is at where I usally add water and it was frothing before I added water. I'm sure as I noticed the funk in tapered up tube in catch cup. I keep water in sump a bit high to cover a pump for cooling but low enough for water in case power goes out , I don't have a big mess.. Anyway it's the exact same skimmer you have (Coralife Super Skimmer for 220 gal) and the airline was open , I just think it takes time for air whipping impeller to catch up, or enough evap ocurrued during the night? for that weird collation between sump depth and skimmer making foam and skimming properly to finnally occure . It Does (rom time to time)and will whip from a dead stop if your lucky

-the magnets just gotta stay together and not skip off one another-it's same as priming a powerhead (only harder)but just leavng it run seems to work-this time anyway.(i'm leaving it on untill collection cup HAS TO BE CLEANED)
Thanks for quick responce as alwaays
ciao
ultramike