Hot Tubs

I’m going to list a bunch of specific tips and considerations here, but my basic advice is that you’d probably enjoy a hot tub. It’s an investment, but I’d easily choose it over upgrading my car or remodeling my kitchen or whatever else.

There are studies about daily hot tubbing or saunaing being good for your cardiovascular system, but basically it’s just really nice to be in hot water without any fuss. Jets are a bonus, but I would be out there every day even without them.

Choosing a tub

Salt system vs. traditional chlorine + ozone:

If you can swing it (i.e. you have enough oversight of your tub usage that you don’t need to disinfect like you would a public pool) get a salt water system. It’s not nearly as salty as the ocean (at ocean level of salt, I’ve always been careful not to shave my legs so that the water won’t irritate my skin), it’s more like sweat levels of salt, but it’s also not chloriney.

1. You can easily manage it yourself and don’t need to have the chemicals adjusted. (It’s more expensive to buy the salt system cartridges than regular pool chemicals, but I’d rather pay a premium for supplies than pay for someone to come over and service my tub all the time).
2. The salt is facilitating the production of chlorine, but it’s not nearly as chemically of an experience (you don’t get a waft of chemicals burning your eyes by turning on the jets). This is because it generates chlorine on-demand rather than needing excess chlorine waiting to bump into bacteria. Your test strips should not detect any chlorine in the water.
3. You don’t have to rinse off afterwards — as far as I can tell, you won’t smell like chlorine, your skin won’t dry out, and while I do rinse my suit out, I kinda think I don’t need to.
• Long-term testing note: if I’m in the tub every day, my (fairly sensitive) skin will eventually start complaining, so I tend to quickly rinse off as part of my routine, but it still doesn’t feel like I have to.
• I did maybe over-chlorinate a bit (as a cautious new user), which can cause the alkalinity to drop, which can cause some skin itchiness, so I’m going to test raising those levels to see if it makes the water even gentler.
4. I guess because it’s closer to your own body’s salt levels, you don’t get very pruny even if you soak for a long time.
5. Your skin doesn’t really dry out—which is nice on its own, but also means you don’t have to moisturize afterwards (and then feel bad about taking a second dip and washing your lotion back into the water). I’ve had moments of thinking it dried out my toenails, but that was just a very fine dusting of salt 🙃.
6. You only have to drain your tub and start over every 6 months instead of every 3 months.

Brands:

Caldera seems to be the brand of salt water tubs that also cares about quality massage jets (the same manufacturer makes Hot Springs but they’re geared more towards entertaining). If you later decide you want to Airbnb your house or for some other reason you decide you’d prefer a traditional chlorine tub, they claim it’s easy to modify it to convert it to ozone + chemicals.

Apparently everyone raves about the volcano jet in the middle of the Caldera tubs. That wasn’t a selling point for me, but it turns out to be great. I use it on my IT bands and glutes which would be pretty hard to do with the jets on the walls of the tub.

If I were getting a traditional chlorine tub, I’d probably get a Bullfrog with the diverse set of interchangeable jet packs. But I’d want to try them out before choosing.

Mechanics:

Make sure there’s enough power/pumps to handle everything you’ll want to do at the same time. I think the most important thing to check is whether the tub can be heating the water at the same time that the jets are on, but you may also want to ensure that the jets at various stations can be on simultaneously at the intensity you like.

Additional Planning Tips:

• Get a lounge seat
• If you have a salt tub, keep in mind that drips/splashes will leave a faint white salty residue. So maybe choose a light-colored exterior cabinet and don’t get a black set of steps or black slate pavers.
• If you’re likely to use the tub by yourself, consider orienting the installation of your lid so that you can flip it open and enjoy a soak (e.g. with the control panel and your favorite seat exposed) without needing to push the lid all the way off the tub. With lifters these days, it’s easy for one person to pull and push the lid, but there’s something nice about having a one-person sized hot tub experience and it also helps with heat retention, especially if you have the jets on.
• If you live in a place with seasons, try to get the tub as close to an entryway as possible. I know there are people all over the world who like to get out of the sauna and take a cold plunge or rub shaved ice all over their bodies for Vitality! or whatever, but if you’re like me, if it’s blowing snow and you’re wet and you need to take more than a handful of steps to get inside where it’s warm, you might just never get out of the tub (or worse, you might not decide to get in in the first place!)

Usage Tips

• Tubs are tested at the factory and then stored with water in the piping—use a biofilm remover (specifically the blue gel Ahh-Some) to get rid of any buildup before you set up for the first time and before you drain your tub every 6 months.
‣
Click here for gross (but motivational) photos
• Draining tip: there will likely be a fair amount of water left below the drain valve that you’ll have to manually bail. Start with a plastic pitcher (filling a bucket that a nearby buddy can dump for you) and try to stir up any sediment as you do it. Once you just have an inch or two left, try using a plastic bag with an edge held relatively taut right along the bottom of the tub, again, trying to get those last bits of sediment. I use the liners for our small bathroom and office trash cans, but a grocery bag or a produce bag should work fine.
• If you plan on draining your tub every 6 months, try to time it so that you don’t need to do it when the temperature is below 50F (both because it’s not fun getting wet when it’s cold and because you don’t want to worry about tripping the temp sensor when you refill). e.g. March and Sept instead of June and January.
• If you’ll be away for a while, pull off the headrests to prevent them from mildewing from condensation, and drop the temp to save electricity and slow the rate of bacterial growth.
• Be careful with electronics. Salt is corrosive, so I wouldn’t test your waterproof ratings. They’ll probably continue to be splashproof, I just wouldn’t take a bunch of underwater photos without a case. If you do give your electronics a dunking, power them off and then rinse them with freshwater before leaving to dry.
• This is a pretty good online forum for troubleshooting, but I also recommend establishing a good relationship with your dealer so that you feel comfortable calling or texting with any issues.

Budgeting

In budgeting, keep a few extras in mind:

One-time costs:

Major costs:

• You’ll need somewhere to place it that can handle the weight and keep it level. This might mean installing pavers (which could quickly become twice the dimensions of your tub if you’re upgrading your yard anyway and want a buffer for the steps or maybe a couple chairs) ($2k? $4k?). If you want it on your deck, you may need to reinforce the deck to be able to structurally handle the filled weight. I’ve heard of people putting their tub in the garage, which might be the cheapest way to go, but that might be nice in the winter and kinda lame in the summer.
• You’ll need an electrician to wire enough power to where you need it and also install an emergency shutoff (which comes with the Caldera tubs at least). ($1k? $1.5k?)

Smaller costs:

• You may want to get a second filter so that you can rotate them and not have a gap in being able to use your tub while you’re deep-cleaning.
• I use a short hose rated for drinking water when filling the tub (with an RV drinking water filter attached) when filling the tub, and I allow it to dry completely when storing it now that I’m paranoid about biofilms.

Recurring costs:

• Your power bill will go up.
• For the life of your tub, you’ll need to use Ahh-some biofilm cleaner before draining your tub, and when you restart your system you’ll need water softeners and special salt every 6 months, and you’ll need to replace the little cells that power the salt system every 2-4 months. There may be other things you want to put in there periodically: I put a teaspoon of chlorine in if the tub gets cloudy (though maybe I should just raise the salt system level from a 5 to a 6 or use the “boost” for 24hrs at a 10, but this seems comparable); there may be fiddly things like that even with a salt-system.
• You may need to replace the lid of the hot tub every few years. The vinyl head cushions may also need replacing.
• You may want to get dedicated cleaning supplies for the interior of the tub, deep cleaning the filter, or conditioning/protecting the lid.
• I use RV drinking water filters to be able to start with exceptionally clean water — I’m not sure how often I should be replacing them, probably depends on the size of your tub, but by default I think I’ll reuse the same one for 6 months and then start fresh with the refill (since I don’t think they dry out very well between uses).

Seasonal Sales

I don’t have much data to go on, but I have seen significant Thanksgiving sales, and since it’s such a large purchase, it might make sense to keep an eye out for opportunities like that. You may have to compromise on color or tier, since they’ll probably be selling what they have in stock, but that also means you shouldn’t have to wait as long to get it delivered. In my experience you still do have to wait weeks for a delivery appointment, but you can use that time to prepare the space and have an electrician come out.

(If your physician prescribes hydrotherapy, you might be able to get a medical tax break for partial cost—the part that is necessary for you being able to get in a jetted tub, assuming it’s at least 10% of your annual income)

↩️ Click here to return to Useful Things ↩️