· High Noon Pool Care · Seasonal Pool Care · 2 min read
Getting Your Pool Through a North Texas Fall
Summer finally lets go in late September. Chlorine demand drops off, your filter starts working harder, and most owners adjust the wrong one first.
The first genuinely pleasant week of the year usually shows up in late September around here, and it is tempting to stop thinking about the pool entirely. That is the mistake. Fall is when several things shift at once, and a pool that coasted through summer can still get away from you in October.
Chlorine demand drops, but not to zero
As water temperature falls out of the nineties, chlorine stops burning off so fast. Most pools need noticeably less sanitizer in October than they did in August.
The trap is assuming “less” means “none.” Water in the seventies still supports algae, and a pool that gets ignored for three weeks in October will still turn on you. Test, adjust down, keep going.
Your filter is about to work harder
This is the part people miss. Just as chemistry gets easier, the physical load gets worse. Leaf drop in Denton County runs from late October well into December, and mature pecans in the older neighborhoods drop heavily and all at once.
Leaves left sitting do two things: they stain plaster, and they consume chlorine as they break down. A pool with a floor full of leaves will keep testing low no matter how much you add.
Watch filter pressure closely through this stretch. If it climbs eight to ten PSI above the clean baseline, the filter needs cleaning regardless of when you last did it.
Shorten pump run times, carefully
Shorter days and cooler water mean you can pull back on run time. Going from summer hours to something shorter saves real money.
Just do not overcorrect. You still need full turnover, and during heavy leaf drop you arguably need more circulation, not less. Cutting run time to four hours in November is a reliable way to end up with a cloudy pool in December.
What can wait
Do not drain anything. Do not winterize the way you would up north. North Texas pools stay open and circulating year round, and shutting one down properly here causes more problems than it solves.
The real winter task is freeze protection, and that becomes urgent with the first hard front, not in September.