how long for the remora to break in?

[Maverick00]

Well after posting here i decided to rip the skimmer out and give it another wash. i had it running in the sink for over an hour with water vinegar combination, then another hour with freshwater. After rinsing/cleaning it out for a final time i dried it off and reassembled it and hung it back on the tank. Still nothing. I called up the LFS i bought it from and was told i could try adjusting the height of the pump which would change the microbubbles in the skimmer. After another week of playing around with it i dont see any difference whatsoever. I was told by the LFS there would be a restocking fee or they'll let me upgrade to a remora pro for just the added cost of the skimmer. Does anyone that use the pro model see sludge accumulate in the collection cup or just the tea colored water like alot of people seem to find? Im not sure what to do here, return the remoras and hook back up my coralife SS or does anyone have a better upgrade recommendation from the coralife SS in the same price range as the remora? Thanks for the replies.