Well, it’s that time of year again. I took what will most likely be my final swim of the year yesterday. The pool temperature had been holding pretty steady at 76°F for the past couple of weeks, thanks to abundant sunshine and air temperatures hitting 80° or so most days, but all of that is going to be changing over the next couple of nights. In particular, tomorrow night is supposed to get down to the low 40s. That, combined with all of the leaves starting to fall, is going to finally put an end to swimming in 2025. In spite of a late start (June 6), a week away on vacation, and a week lost to poor weather in late August, it was a great season. I wrapped up with 82 swims, beating 2021’s count of 80, and just shy of 2022’s count of 84. I beat my previous latest swim date, October 4 (set in 2021), by 3 days. I swam 4 times in October, making this my first year with more than 1 October swim. Lastly, I set a record of 58,626 total strokes, eclipsing 2022 by around 4000 strokes.

No end-of-season swimming post is complete without a mention of our all-time latest date in the pool, October 9, 2007. It’s taken 18 seasons to come this close to matching that date, but it appears that the record is going to stand for another year. Earlier this season, out of curiosity, I took a look at historical climatology data for September-October, and 2007 was an outlier — the weather was warmer and drier over that period than any other year we’ve owned our pool. Our kids were little then, and they were the last ones in the pool that year — this year, it was me, swimming my laps. My wife and I are getting more apt to swim in cooler water as the years go by, so I’d say that the odds of October swimming happening are increasing year-to-year, but who knows if we’ll be in the house long enough to have a shot at that elusive October 10 swim.

After struggling with calf tightness for most of the summer, I gave up backstroke at around the end of August with the intention of working on my kicking next year. For a couple of weeks, I also gave up front crawl, and was swimming 6 sets of 60 breaststroke/60 butterfly for a total of 720 strokes, which was rather taxing on my shoulders. Eventually, I corrected my front crawl kicking, and switched to 4 sets of 60 breast/60 butterfly/60 front crawl. At the very end of the season, I reintroduced a tiny bit of backstroke, swimming alternating sets of 60 breast/60 butterfly/60 front crawl and 45 breast/45 front crawl/45 butterfly/45 backstroke. At this point, I feel pretty good about my front crawl kicking, but still have work to do with backstroke.

So long, 2025 swimming season. We’ll see what 2026 holds in store!

I finally got out for an after-dark swim tonight. It only took until the end of the season. I often take night swims in August and September, but up until today, this year had been an exception. I’m kind of amazed that I’ve never had to replace the bulbs in either of the underwater lights in 24 seasons. I have no idea how old they were when we moved into the house. They just keep going and going. The bulbs are something like 300 watts each. When I turn them on, I think the lights on the entire block dim. We probably should replace them with low-voltage LED lights, but we don’t use the lights enough to make it worth the expense.

It’s been a good swimming season. Today was my 76th swim, eclipsing last year’s total of 75. I’ve also passed 2022’s latest swim date of September 27. If I can swim one more time this year, I’ll set a record for stroke count, passing 2022’s mark of 54,696. Two records that likely will stand are 2022’s total count of 84 swims, and 2021’s latest swim date of October 4. To hit 84 this year, I’d have to swim until at least October 6, which I don’t see happening. Swimming later than October 4 is not out of the realm of possibility, but we’ve got a cool-down coming at the end of this week, so I’d say it’s unlikely. You never know, though!

Pool season is winding down. This year, we added a Betta SE robotic skimmer to our arsenal of pool gadgets, and it has worked out pretty well, although it is definitely most useful in July and August, when it can run 24×7. It can’t quite keep up with the massive onslaught of Tulip Poplar leaves in late summer, not that I really expected it to. It also can’t run when the Polaris is in the pool, as it gets caught on the hose. Next year, I may consider adding a cordless robotic vacuum like the Aiper Scuba S1, which I’ve read extensively about on troublefreepool.com. I don’t foresee getting rid of the Polaris, but it would be great to have something that can run at the same time as the Betta for day-to-day cleaning.

Speaking of the Polaris, it wouldn’t be a proper pool season if something didn’t go wrong with it. This year’s issue was mostly our fault, as we’ve been connecting and disconnecting the hose a lot more often (because of the Betta) and instead of using the quick release, we’ve been screwing it in and out of the wall fitting. I think over time, this has worn the threads down on the fitting, and when I went to run the Polaris a week or so ago, the fitting would no longer stay screwed in to the wall. As a cheap fix, I went to Lowes and picked up a 1.5″ PVC male and 1.5″ female adapter, and cemented them together to make a short extension. I screwed the Polaris fitting into the female side, and the male side into the pool wall fitting. I’m not sure if the issue was with the Polaris fitting or the wall fitting, but either way, now the hose no longer ejects out of the wall when I turn the booster pump on. I suspect that the new fittings provide a little bit more good thread for everything to screw together securely.

We’ve got a coastal storm working its way inland just to the south of us, so it’s been kind of a dreary, breezy, rainy day. In spite of that, I managed to get in the pool for my laps. I’m not sure what the water temperature was, but it felt warm compared to the 67°F air with chilly drizzle. There’s a warm-up coming later this week, so I’m hoping for a couple more weeks of swimming this year.

It was a late start to pool season this year, thanks to a very cool and wet month of May (not that I’m complaining by any means). In most years, we try to have the pool open by Memorial Day weekend, but this year, we held off for another week, uncovering it on June 1. My first swim was yesterday (June 6), and the water temperature was still only 76°F. I used the tether, and picked up right where I left off last year, swimming 3 sets of 60 breaststroke, 60 front crawl, 60 butterfly, and 60 backstroke, for a total of 720 strokes. I’m going to try to swim more days than not this season, and we’ll see how that goes. I missed today because I was too busy vacuuming and cleaning the pool. The good news is, I think there is light at the end of the tunnel with regards to the massive chore that is spring pool opening.

This is our second year with a variable speed pump. Even running it 24/7, it uses less than half the electricity than our old 1hp single speed pump used running 12-14 hours/day. Most of last year, I ran the pump at 2600rpm in the morning, 1750rpm in the afternoon/evening, and 750rpm overnight. This year, at least for now, I’m running it at 1750rpm for 13 hours and 750rpm for 11 hours, with occasional “boosts” to 2600rpm to run the pool cleaner. With electricity getting more and more expensive, the VS pump has been a big win, but the trade-off is that the skimmers don’t work as well at the lower pump speeds. Last year, I found myself manually skimming the pool surface much more often. I’ve ordered a Betta SE Plus solar-powered skimmer robot, and am hoping it will help. Also, anecdotally, it seems to take more work to get the pool fully clean and clear during opening. The past two seasons, I’ve been vacuuming to waste, then running the Polaris to pick up the larger debris, and then vacuuming again to the filter to get the rest of the fine particulate crap up off the bottom. In prior years, the final vacuuming step was not needed. This may be more an issue with the Polaris not working as well as it should, though (long story that probably warrants a separate post).

My Autopilot salt chlorinator is acting as flaky as ever this season — a lot of the time it works fine, but often, I see intermittent “check/clean cell” and “low amps/cell” errors flashing on the display, with volt/amp readings all over the map when it is happening. At one point, I got the error condition to clear up by going into the maintenance menu and selecting “force reverse”. Last year, I had the same issue at one point, but it cleared up and the system ran flawlessly for most of the season. I am wondering if it is finally time to replace my salt cell, which is way past its prime. It has outlived the original DIG-220 control unit as well as the original tri-sensor. The cell has been in service since 2009! Its stated lifetime, per Autopilot, is 60,000 amp-hours, and it has about 43,000 amp-hours with the current controller, which I put in service in 2019. That’s about 7200 amp-hours per season over 6 seasons. Before 2019, it ran with the old controller for 10 seasons (2009-2018). If we assume similar usage over those 10 seasons (I never checked the amp-hour reading on the old controller), then the cell has seen about 7200*16 or 115,200 amp-hours of usage. That’s almost twice the expected lifetime!! I’ve had a new cell on hand for 5 or 6 years, and every year, I debate whether to put it in service, but the old one just seems to keep on going. Maybe the time has finally come to retire it.

In any case, I’m hoping that within a week or so, I’ll be spending more time swimming than I am maintaining the pool.