Today when I was vacuuming the pool, as I reduced the flow from the main drain and put the skimmer on 3/4 full suction I noticed as i was cacuuming that a lot of gas bubbles were coming from the returns and then the pool filled with whit foam. I have a new aquarite system and have been bringing the pool back from death pond valley. is it okay to leave the swg on while doing so?