I just recently refilled my pool. My water is oxygen injected before passing through a filter and softener, and so there's a lot of air in the pool water right now. What I'm noticing is that the pump is filling up with air - within 5 minutes of running I can tell the difference in sound, stop the pump and open the air release valve and air hisses out for 10-15 seconds.
Thanks to some recent pains with my septic system, I'm painfully aware that air in an effluent pump is a Bad Thing. But, the impeller on an effluent pump is on the side, where it appears the intex pump has it on the bottom, after the filter chamber. So - is this a big problem? Is the sound difference I'm hearing the pump starting to cavitate? Do I need to babysit this thing until some of the O2 works its way out of the pool water? Or, will the air the enters the filter chamber just rise to the top, allowing the impeller to still do it's job properly?
FYI I have double checked all the connections and everything seems to be on tight, there don't appear to be any air leaks in the hoses, etc. The pool was brand new 2 weeks ago and I didn't have this problem before refilling. Of course I didn't run the filter for the first day or two, which led to lots of other problems but that's another story