Been poking around your site and thought I'd register.
We moved into our current home in 1999.
Th pool was put in sometime in the late 80s (best guess).
Learned a lot thru the years...but still consider myself a novice pool owner.
Put a new liner in about 5 years ago.
Pool has been relatively easy to maintain....but we have had our share of issues.
2 years ago, the light niche finally gave way and let the backfill sand into the pool and behind the liner.
I pulled the liner loose and tunneled under the concrete deck to replace the niche. PITA
There are still a few small pebbles under the liner.
I'll eventually have to pull it out and vacuum it clean.
We have a mesh safety cover for off-season and start up with winter water, shock and algaecide.
All-in-all, we have had pretty good fortune with chemistry.
This year - NOPE....
I'll start another thread.... but in summary, we opened in March and until mid-May everything was clean and clear.
About 3 weeks ago, we had a green algae bloom and have not been able to get our chlorine level to hold more than 12 hours since.
I test for Chlorine and add 1 bag of powdered chlorinated shock and retest in ~6 hours.
This has been going on for over ~ 1 week.
Water is clear as glass...just no chlorine.