A Theory About Rising pH in SWG Pools

[Sentient]

Yes, the first return is about 15 feet from the pool equipment, the second about 25 and the third about 40 feet away. My presumption has been that the bubbles all escaped at the earlier ports, but it could be absorption. I will ask some family members to also give the area where the bubbles surface a sniff to see if they can smell chlorine. Many of the tiny bubbles remain in suspension, never surfacing. I can wipe them off of any surface underwater with my hands, including the cleaner hose which is 20 feet from the nearest return.

There is no bypass of any kind. I have only a single speed pump and the flow rate is pretty substantial.

[fofa]

All my returns, 1 - do not bubble, at least that I can tell, 2 - are pointed down because my cleaner instructions said to do that. I still take 3 pints (30K gallon plaster inground) every week.

Just an F.Y.I.

[chem geek]

Thanks. This is just one of those areas with multiple factors. Lowering TA does help, but doesn't always help that much.

Not having any bubbles at all doesn't make that much sense since there should at least be hydrogen gas bubbles since I would expect the water to get close to fully saturated and for the hydrogen bubbles to outgas -- at least by the end of the day with the SWG still running. You might take a look at night with an interior pool light turned on (and, obviously, turning on the pump and SWG). Many times people don't see bubbles during the day, but can readily see them at night.

Richard

[fofa]

I'll have to keep thought in mind as I can't see squat right now thanks to Hurricane Ike and no power. If I ever get back in (running out of season now) I'll post back.