Marlig Fix-A-Leak Pool and Spa Leak Sealer - 32 oz

This is an absolutely amazing product. To be sure, I was skeptical at first about its potential effectiveness, but after using it on our spa, I'm sold. When we purchased our home, we inherited with it a 450-gallon hot tub which the previous owners installed new 11 years prior to our moving in. Because we were not "hot tub people," as we say, the spa sat empty and unused by us for four more years. We finally filled it and got it up and running, only to discover soon that it was losing 3-4" of water per day. We bought this product after seeing it reviewed on Amazon and decided to give it a shot; we had little to lose, as one bottle cost less than 1/3 the price of a plumber showing up for a house call. Per the directions, I removed our spa filter and poured the product directly into the water return. I ran the pump and jets frequently over the course of the next 36-48 hours, and periodically agitated the water by hand with a skimmer, to mix in the product that was sinking to the bottom. Amazingly, over those first couple of days, I noticed the water level steadying and the wet spots around the spa drying up. Uncertain if the leaking had stopped entirely, we purchased a second bottle and repeated the steps again. After that second application, we drained the spa, wiped the shell per the instructions, and let it cure (empty) for the maximum recommended 3-5 days. As of this writing, the leaks have stopped ENTIRELY! Our 16-year-old spa works again like new! We are completely amazed. To our untrained eyes, the product seemed to be like some kind of liquid polymer that is most certainly heavier than water; our theory is that when it reacts with air (i.e. at a leaky spot in the spa plumbing), the polymer hardens and seals the hole, and the bottle claims it can seal leaks up to 1/8" in diameter. There were at least three places we could identify in our case that had leaks; all of them are now sealed up--and all for less than the cost of a plumber's house call. We highly recommend this like-magic product, even if only as a first step attempt to remedy your spa leaks; as we had intended to do, if the product doesn't work, you can always invest more to fix it from there (i.e. with a plumber or other professional), but why not at least start with this?

Fantastic product. My Hot-Springs Aria developed a leak and to access the plumbing would have been a massive job. I poured in 1/3 of bottle, ran the pumps for 1-2 hours and let sit for a day, then ran pumps again for 1 hour. Waited again for a day before running pumps. Then waited for another day and the leak was sealed up completely. I would guesstimate the leak to be 20-30 gallons per day before sealing it completely. It's been sealed for 3-4 weeks now.

Well worth the money as it does Job very well. I have a decent leaks in my Cal Spa F1325 and as it right on top so it easy to use this product but not so easy to get too as my spa tub is 151x91”. The leak is in the middle and hard to get too. I put this in a small travel clear bottle. The one u get for travel to put shampoo and lotion from home to travel. This make it easy to pour on the leak very easy. I pour it on. Let it sit and then use my pool vacuum to suck it up. It’s best to push the filler liquid to side as you don’t want to vacuum directly at the leak area. As it suck it back up. I learn this so I had to redo. But all and all it works. I was not able to upload the 2nd video showing that it stop as Amazon didn’t allow it. But u get the picture

After moving spa for backyard work there was a leak, somewhere, upon its return. Impossible to find with the foam enclosing everything so I reluctantly tried this. Followed directions implicitly. I have now no leak. We will see how long , maybe change to 5 stars if it goes a couple of years.

This could be the favorite product that I have EVER happened upon. I've had hot tubs for 25 years, and never had a serious issue that seem to plague my friends that own hot tubs. well, 2023 and I was due. Hot Springs Envoy 450 gallon tub. I was losing over an inch a day, I I didn't think any fix a leak miracle cure would work in my situation. I spent a month trying to locate leak to no avail. Hot Tub service folks told me that this would never work. THIS Magic sorcery fixed my issue first time and immediately, and for 4+ weeks, not a sign of even a drip. I am going to give the another try, as it worked perfectly and stopped my leak on first try, and it remained perfectly plugged for a little over a month, before it gave way. I will try it again during a warmer spell (I live in North East, it's the end of January 24), and see if I get successful and lasting fix on the next try. I could not be more amazed in a product. Worked for me. AMAZING

I haven't used my hot tub for the past 10 months. I drained it last November and after filling it I easily found 12 leaks. Some of the leaks were produced rapid drips and other were slower. After operating the tub for 24 hours I was loosing about 1 inch of water per day on a 500 gallon capacity. After deciding that this 17 year old hot tub was at the end of it's life I tried this sealant. I put in about 12 ounces into the skimmer (removing the filter first), turned on the pump on low for 8 hours. I also used a wet vac to remove the large puddles on the interior floor and with the aid of a bright sunshine 80 degree day my hope was that the enclosure would dry out. Upon returning the floor of the plywood inside of the tub showed no new puddles and all of the drips were dry. I am now filtering the water to remove the rest of the sealant. I am very impressed with this product and for $25 it is money well spent. I couldn't even imagine how many hours I would have spent resealing the fitting and flexible tubes. Most likely due to the volume of water building up and the control unit I was at a point that I was going to scrap the unit. Even if this fix last only the season I have enough sealant remaining to do it 2 more times. I will keep this review updated so that it will be worthwhile to hot tub owners that are facing the same problem I was having. Follow-up Comment Today I drained my tub after all of the leaks were sealed. I drained it because I wanted to make sure that the water was free of sealant. I filled my tub with the wash tub faucet. This allowed me to reach the 104 degree operating temperature in about 2 hours. Out of the dozen severe leaks that I had I am down to 3 small leaks. I expect two of them to stop as the tub runs over the next few days. This is always the case, for some reason the old seals tend to expand when heated and very small drips stop on there own. One leak most like will continue but that will not cause a problem because of its location, there is no controls or power any near it. With a 17 year old tub there were always a few small leaks. This sealant worked as I hoped it would. I know it not permanent but mostly will work for the next 4 months until I drain it for the worse part of winter. I sure that I will have to repeat it next year but based on the unit cost of $25 for 32 ounces I can keep it running for three more years. I would recommend this product to anyone facing a similar problem like mine. I had nothing too lose except the cost of heating the water, draining and refilling. The cost of fixing the leaks would have resulted in some broken jets, new tubing, a slew of labor hours. This was the best solution for my situation. Final Comment After using this product for two weeks most if not all leaks returned. Leaks got worse when the temperature was lowered from 104 to 85 and the circulator was changed from constantly running to a 2 per day filtering cycle. I knew from the reviews that there was mixed feelings on the performance of this product and while some say it worked others said it didn't. For me it was a shot worth taking and I not really disappointed by it's performance. I'm sure in some situations it works great but not mine. I will run the tub for the remainder of the season, mark all of the leaks with a grease pen and then begin the long process of re-cementing the bad joints. Update- October 10, 2015, leaks were so bad that the entire 500 gallons leaked out over a 2 week period. Today we decided to scrap the tube because virtually every joint had leaks. had nothing to lose if it worked but just as other reviews stated the fix was temporary.

This stuff works. We had a spa leak and was losing about 2 inches per day. It was pouring out! This stuff sealed it the very first time we used it. After putting it in, run the hot tub twice a day for 20 mins for 2 weeks. Even after it works the first run do it for 2 weeks twice a day. We now have a full tub to enjoy!

I was skeptical, but figured for the price, why not try it? Our tub was losing about 3-4 inches per week, from a corner that offered no easy access to anything. The directions on the bottle were primarily geared to fixing leaking swimming pools but I read thru them several times and scaled everything down to our 225 gallon 2-person hot tub. I let the bottle stand in hot water for about 20 minutes (per instructions) then removed the filters, started the jets, shook the bottle, and poured about 1 cup into the filter box. I let the jets run for 2 hours, then shut them off. No more leak! I haven't run the jets since then, bacause you're supposed to allow a day or two for the fix to "cure" but so far so good! Even if it's not a permanent fix, I've got enough for 3 more treatments if needed.