
Pool Service Knowledge Every Tech Should Know – Vol 2
About this episode
The hardest pool problems aren’t always in the manual—they show up on the pad when the water won’t move, the lid won’t budge, and the cleaner sits still like a lawn ornament. We dig into the field fixes that save your day and your lungs, starting with the offline chlorinator that refuses to dissolve tablets. Learn how to open it safely, diagnose the clogged check valve elbow with the “little BB,” and stop hidden leaks by replacing brittle black tubing before it drains a pool dry. If you’ve ever fought a stuck lid, we explain why trichlor swells o-rings and how a fresh gasket turns a two-man wrestle into a one-minute job.
High PSI and poor prime can stall an entire route, so we share the quick backwash that drops pressure in 25 to 30 seconds and brings the system back to life. When your backwash runs oddly clear, we show you the toggle trick that shakes compacted DE loose. Then we tackle the age-old question of how much DE to add back, cutting through wet versus dry confusion with practical recharge amounts that protect grid life and maintain strong flow without overloading the filter.
Finally, we turn service into strategy with a cleaner plan that works. Drop in bulletproof demo cleaners like the Hayward Aquanaut or Polaris Max, set variable-speed pump RPMs correctly, and let spotless water sell itself. For budget holdouts, deploy refurbished spares—Navigators, Aquanauts, MX6s and MX8s—to prove the value over time. You’ll cut manual vacuuming, keep pools cleaner all week, and win more satisfied clients with less effort. Subscribe, share with a fellow tech, and leave a review telling us the one tip you’re trying on your next stop.
• why offline chlorinator tablets stop dissolving
• how to open chlorinators safely and replace the check valve elbow
• spotting brittle black tubing before it drains a pool
• freeing stuck lids by replacing swollen o-rings
• using a quick backwash to drop PSI and restore flow
• what to do when backwash water runs clear
• practical DE recharge amounts after backwashing
• demo strategies that sell cleaners without selling
• using refurbished spares to convert holdouts
• why every pool should run an automatic cleaner
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The Pool Guy Podcast Show — Pool Service Knowledge Every Tech Should Know – Vol 2. Machine-transcribed; use the interactive transcript above to jump the player to any line.
This episode is brought to you by Hasa. Liquid is clearly better. Liquid chlorine is the highest purity, works immediately, has no added signaric acid or calcium, and it will leave your pool safe, clean, and clear. And by the bottom feeder professional grade battery-powered vacuum system, it sucks to clean pools, so cleaning pools sucks less. Get $100 off with code DVB100. This episode is brought to you by Schimmer, the number one pool service software in North America. With Schimmer, you can streamline your schedule, grow your revenue, and keep your customers coming back with five-star service. Whether you're a one-person operation or an established team, Schimmer is your partner in success. Visit getschimmer.com slash pool guy to try Schimmer for free for 30 days. Welcome to the pool game podcast show. This episode is called the Pool Text Knowledge Guy
Volume 2, and this is where I go over certain aspects of pool service that you may not really know about and learn when you're being trained or if you're buying a pool route or if you're thinking of your backyard pool, these are things that you kind of get by being out there, and these little bits of knowledge I'm going to share with you today in this podcast. Are you a pool service pro looking to take your business to the next level? Join the pool guy coaching program. Get expert advice, business tips, exclusive content, and get direct support. For me, I'm a 35-year veteran in the industry. Whether you're starting out or scaling up, I've got the tools to help you succeed. Learn more at sumipoollearning.com. Again, these are things that you kind of learn while you're out there, the troubleshoot, and sometimes you really can't find the answer without experiencing things. I remember when I first started service, there were no cell phones, of course, and there was no Google really, and so I had to take off my first motor and replace it, and without any instructions, I kind of had to just use
my logic skills to figure out how this thing worked, and it's not super difficult, actually, but if you've never done it before, it can be challenging, and I was able to do it. It took me a lot longer than it does now, but I was able to work my way through it. So this is just to impart sort of knowledge to you so that you don't have to kind of struggle through things. The first one I'll start with is if you have a rainbow offline chlorinator, that's the chlorinator with the black two-bings, it's the rainbow 300, they have different variations of that one as well, but you'll see this white chlorinator and it's four three-inch tablets and these black tubes. Now there's a couple things about this all-cover here. The main thing I wanted to cover is if the tablet are not melting in there, and I recently did a podcast on toxic chemicals and fumes, and so if the tablet's not melting in here, it is sitting in there in the chamber, and it's basically there's no water really in there. When you open it up, you're going to get a really toxic
plume of gas, and it may knock you down for sure and make you gag and cough. So be careful whenever you get to a new account, or an account where the chlorine level is struggling that has a chlorinator. The first thought I always have when I'm at a pool with the offline chlorinator, and the chlorine level is near zero, and I know there's tablets in there, as the tablets aren't dissolving, and that's why it's at zero, and so I open that carefully, and make sure that I don't stand over it when I open it, and so sure enough, in most cases, as the tablets aren't dissolving, there is a little check valve on the bottom, and if you turn over the chlorinator, you're going to see a little elbow, and inside that elbow, there's like a little BB, basically, and unscrew it, take the, turn the pool off, unscrew the black tubing, take that elbow off, and shake it by your ear, and you should hear the little BB going back and forth.
If you don't hear it, that means there's a clogged up with gunk, basically, from the trincler tablet. You just simply replace them, so what I do, and I'll paint there so you can clean them. I've there been able to successfully do this. I just replace them. I carry a bunch of them in my truck. They're like six or seven bucks, and just replace it, and that will get the tablets to dissolve in the chlorinator guaranteed, that that's the problem, why the tablets aren't dissolving. It's that little check valve elbow that's clogged up. Changing that, the tablets will start dissolving, but use caution again, with the end dissolved tablets in there. A couple more things, with the chlorinator, I was going to say just one more thing, but I'll just say two things. Now, black tubing is exposed to the sunlight, and it can't get brittle and cracked, so you want to test it ever so often. Maybe every few months kind of bend it a little bit with your hand to see if it's cracking, because if that tubing cracks, and this has happened to me more than one occasion, it'll drain the pool down significantly, especially if the skimmer has a float diverter valve,
it'll just drain it down, pass the skimmer, and continue to drain it down until the pool is virtually empty, until it gets to the main drain, basically at that point. So be careful with the black tubing, check it off, and make sure it's not cracked or brittle, because if that cracks, it's going to of course cause the pool to leak water. I would order some black tubing carrying your truck, this, this out in six foot sections, their coil depth, so they're easy to store, and having a couple of these on your truck is really helpful with these chlorinators. The last thing is if you can't get the lid off these things, and this is problematic out there, when the lids get stuck on there. Now some guys use a 2x4, I like using my large channel locks. I carry these large blue channel locks, you should have them there. Let me get you actually the product, so you can kind of get visualize what it is. You can look this up on Home Depot, it's the 16 and a half inch tongue and groove slip joint plier. I call them channel locks, and it's by channel locks, so that's why I call them channel locks, but I guess they're
actually called tongue and groove slip joint plier. You start pretty gigantic channel locks, I'll just take the blue part of the handle and set it inside the top of the chlorinator, and then I'll put my weight on it and turn it off, and the reason why those lids get stiff and get stuck on there, there's an o-ring in there that after exposure to the trichlor and the gases in there expands and gets really fat, and it expands to like you know 10 times this normal size, believe it or not, you'll see when you take it off, look at the o-ring, it'll be like gigantic in there, and just replace it with an o-ring, so carry some of those o-rings for the pinter chlorinators on your truck, and you can put them in there and change them often, so that's the only reason why the lids get stuck on there, that o-ring expands out, and it kind of causes like a seal basically, and change it o-ring, though there's going to be so easy to get off going forward at that point, but it's something to note that there can be a lot of problems with these chlorinators, and unless you've worked on them, for the first time you're going to be kind of
clueless of why it's not kind of dissolving in there, you know why the lids not coming off, and I hope this helps solve the mystery there for you, this one here is for those of you who service pools in a D filter with a backwash, sometimes you get to the pool and the filter pressures at 30 psi, but it may be on a day where you really can't clean that filter, and it's something that you want to just kind of bring the psi down a little bit without doing much, and you may not even have DE on your truck, and I've had the situation before where I forget to bring DE with me, and the pool psi is at 30, you can do something called a quick backwash, and I've done this successfully, it's not in the manual anywhere, it's probably not recommended by the manufacturer, they would want you to do a two minute backwash and then recharge it with DE, but I found a quick backwash really works in more than one situation, of course the primary situation I work in is if you're at 30 psi and you want to just get the pool down a little bit until the next week, and then you can of course
clean the filter or fully backwash it, it's also a great way to check if there's something wrong with the pool, I think the quick backwash also offsets some problems with priming and things like that, so if you see that the water is not filling up, the pump pot or wet end, you look in the lid and it's like half full of water, and it's kind of churning and struggling, that's because it just needs one of these quick backwashes, maybe the automatic cleaner is not moving or the sposs spillway is just trickling over when it should be flowing well, so turn the pool off, and then you want to backwash for about 25 seconds, 30 seconds, and then put it back in the pool mode, and you'll see the PSI drop down, maybe the 20 or 22, and that's enough to get you through the week in most cases, it's also enough to get the water flowing in the pump basket, and it doesn't really expel a lot of diatomaceous earth, and that's something that is effective with DE filters, now let me cover a couple backwash points since I'm talking about this, if you
open up the backwash valve and put it in the backwash mode, I should say, and nothing but clear water comes out, don't worry about that, it's because probably the diatomaceous earth is really clay-like and covering the grid, so what you want to do when that happens is turn the pool off, put it back in filter mode, turn the pool on for 30 seconds, turn the pool off, put it back in backwash, turn the pool on, and I can guarantee you that putting it in backwash, clear water comes out, turning it off, putting it back in filter mode for 20 seconds, or so, and then putting it back in backwash mode, you normally would get a lot of the DE to come off at that point, because you're kind of like shocking the system by quickly going to backwash, back to filter, and then backwash again, and that kind of loosens up the DE and gets it to come out, so that's how you solve that problem, if you aren't getting any dirty water coming out when you first initially backwash the filter, and last, if you do backwash the filter for one and a half minutes or two minutes for a full
backwash, the question always is, well, how much diatomaceous earth do I put back in, do I put, and it depends on the scooper if you're using the true one-pound scooper, which is the large orange scooper, or if you're using the half-pound scooper, which is like the blue or light blue scooper, actually there's like a large light blue scooper now, so basically diatomaceous earth when it's dry, the dry weight is different than the wet weight, it's kind of confusing, but a true one-pound scoop of DE is one-pound, it's a larger scoop, and the regular scoop is actually half a pound of dry DE, so you have to put two scoops, but let's just say you're using the large true one-pound scooper, how much DE put back in, this is very debatable, and it's one of those things where there's no concrete answer, the manufacturer I think says put half the DE back in, that you normally would put in the filter cleaning, so if you have a 48 square foot DE filter, you're going to put like three pounds back in, 60 square foot, you're going to put four pounds, but I really think it's
one of those things where you don't really need a ton of DE back in there, I would say I always put about two pounds of diatomaceous earth back into a 40 square foot filter, and maybe three pounds of a 60 square foot filter, you're kind of judges out on your route, how much DE to add back in, there's no true scientific amount, because you don't know how much diatomaceous earth came off the grids in the back wash to begin with, and you don't want to over recharge it, I think putting half the DE back in is too much, in my opinion, so I always err on putting a little bit less DE back in, and it seems to work out perfectly for me, not overloading the filter with diatomaceous earth, and I never put half the amount back in to a filter after back washing it, and the Pool Guy podcast show has teamed up with UPA to bring you affordable reliable liability insurance starting at just $64 a month, get up to $2 million in coverage,
and the members of my coaching group get an even lower rate, protect your business and your piece of mind, sign up with UPA today by clicking the link in the podcast description, let me change gears a little bit and talk about automatic cleaners and pools, and I think as a pool professional, all your accounts should have an automatic cleaner in the pool, it really helps speed up your day, it also helps keep the pools clean all week long, and it's a necessary tool to have in a lot of areas, especially my area of Los Angeles County, where it's really dusty when the wind blows, and it keeps the dirt on the pool, now the question is, what's the most effective way to sell these cleaners to customers that are reluctant to buy them, because a lot of customers like them have them already in the pool and you think over the account, not a problem, but there are a segment out there that just don't want them in the pool, don't think about it, some of them may say, well, I hired you to clean the pool and that's why I don't want one, I want you to clean the pool and vacuum it every week, that's fine, but there is a pretty easy way
to sell these to the customer, and I find that there's two effective ways, one of course is to put a demo cleaner in the pool, now pick this carefully, because you don't want the demo cleaner to fail, and the customer is going to be like, yeah, I told you they don't work, so pick your demo cleaner carefully, I think there are a couple of default demo cleaners that you can drop in the pool and not worry about, I would say the Hayward Aquinot pool cleaner is probably one of the best demo cleaners, works in just about every pool, now of course fiberglass and vinyl pools, you would want a demo something like the zodiac ranger, but for the plaster pools and pebble tech, I like the Hayward Aquinot, you can also demo the Polaris Max or Atlas cleaner, these are also pretty bulletproof in those pools, so make sure you set it up for the pool, if it's a VS pump, get the RPM set, you should know how to set these up pretty good at this point, so setting it up is critical so that it's actually working in the pool, and these two are pretty effective in keeping the pool clean during those weeks, I'll
leave it in for two or three weeks, then I'll tell the customer if you want to buy it, I'll sell you one at cost for my supplier, and sometimes they can order one and get a rebate as well, or you can get the rebate for them, and it's a great idea to demo them first, and the pool looks so good during the week, that they're going to just love having the cleaner in there, so I usually sell about, sell these to about 80% of the ones I demo in with no problem, but there's a small segment, let's say 20% that are like, well I don't really have the money in my budget right now for one, so I'll think about it, so with those customers, I'll just put one on my spare cleaners and the pool, and just let it ride it out until they feel comfortable with buying a cleaner, so I have a lot of Hayward navigators, there was one point where I had like 20 of them in my garage, I had way too many of them, so I had one of my delivery drivers take them, and he resold them themselves, but these are the ones that I pull out of pools all the time,
any cleaner that you can pull out of a pool, if you have a use Hayward Aquanaut, you can use that, or even at MX-8, I like using these, and most of the pools, if you can get an MX-8, rebuild it, one of the guys here in my area uses MX-6s all the time, it just puts them in customers' pools, and doesn't even worry about charging them, I mean you can do that as well, but I just like using a spare cleaner, an older one, so I'll tell the customer, I understand you are not ready to buy a cleaner, I do have a spare cleaner that I can put in the pool, and I'll put it in next week for you, and just leave it in there until you're ready, and that way you'll get the same benefit of having the cleaner, and eventually I know you're going to purchase one, but for now leave the spare cleaner, and sometimes you'll leave it in there for a year, and it's one of those things where eventually they will actually buy one, hopefully, if not you can leave the spare cleaner indefinitely, it doesn't really cost you anything to have the spare cleaner in there, and it does save you time, and this is one way to actually have a cleaner in the pool, where the customer is reluctant to buy one,
I just like having cleaners in all the pools, because it makes again your job easier, you can do more pools, and you're not spending so much time maddening your vacuuming the pools with getting the dirt out, it just frees you up to do other things, and if you have spare cleaners, utilize them, don't leave them in your garage, if you put into a cleaner in the customer's pool, pull the old cleaner out, and refurbish it, and use it as a spare cleaner, but definitely demo those cleaners in the pool, when you demo a suction cleaner, the customer more than likely will eventually purchase the cleaner, so I hope you found these tips helpful, and if you're looking for other podcasts, you can find them on my website, swimmingfullearning.com, click on the podcast banner, there'll be a drop down menu of over 1800 podcasts for you there as well, and if you're interested in the coaching program that I offer you can learn more at pulgaycoaching.com, thanks for listening to this podcast, I guess you're weak, God bless. This episode is brought to you by Hasa providing products that deliver clean, healthy water for every aspect of everyday life, the bottom feeder battery powered vacuum system, portable powerful,
and only weighs 12 pounds, and skimmer gets skimmer america's number one pool service software, podcast listeners can try skimmer for free at getskimmer.com, backslash pool guy.
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