I am maintaining my own small (30 m3) pool with great help from this website. Not had a pool before, but at 72 never too old to learn something new. Last year (year one for me) fitted new pumps, non-return valves, sand filter and purchased a pool cover to help with heating in summer. Also did some tilework and re-grouted the pool which gave me a chance to refill it with clean water and start chemicals from scratch (CYA was off the scale after fifteen years of tri-chlor tablets). As expected, the new tile grouting had an effect on the pH and I have been adding pH- regularly. Also last summer, in an attempt to manage CYA I started adding liquid chlorine which has a relatively high pH. Over the past winter the pool has been covered so chlorine demand has been negligible but pH is still going up (from 7.5 to over 8 in a week), plus it is now a year since the pool was grouted. I live in southern Portugal so winters are not a big issue and there are plenty of blue skies, just too cold for me to be swimming.
A few houses nearby have identical pools and mine is the only one with a pool cover on almost permanently. They don't seem to have the same pH issues. So two weeks ago I removed the pool cover and guess what.... my pH hasn't changed at all. Does anyone know what is going on? It's a small infinity pool but there are no problems running the pump with the cover in place.
A few houses nearby have identical pools and mine is the only one with a pool cover on almost permanently. They don't seem to have the same pH issues. So two weeks ago I removed the pool cover and guess what.... my pH hasn't changed at all. Does anyone know what is going on? It's a small infinity pool but there are no problems running the pump with the cover in place.