Anyone run a new long section of flexible tubing? My skimmer hasn't been producing ever since I ran the clear flexible piping to the basement. It's been about 2 weeks. Maybe there is some sort of chemical in it that is messing with the surface tension of the bubbles? My corals also didn't really like the change. Slightly deflated but back to normal. Things I changed/did: cleaned skimmer, new return pump, new black return tubing, new clear drain tubing, new sump tank.