MAV AquaDoc ADLS16 Spa & Hot Tub Leak Sealer, Liquid, Fixes Leaks in Spas & Hot Tubs, Prevents Corrosion, Extends Spa Life

Pull the filters, dump in the entire bottle and let it go 24 hours. Was losing 10+ gallons a day and it's completely stopped the leak and haven't lost a drop since. Is it a permanent solution? Probably not...but time will tell that tale (will update in due time) Update: Just shy of 3 weeks since treatment I have developed a small leak again. Treated with a second bottle and will continue to update the results. Also to note, you'll probably want to be sure to have a replacement set of filters on hand as shortly after reinstalling them they were plugged up. I will wait 48 hours this time before putting them back in.

It actually does what it says it does, I had a leak that I just couldn’t find in my hot tub so I said I’ll try this thing, I had to do it twice but actually did the job effortlessly, I only used 1.5 ounces each time and I have a 5 person hot tub so I have loads left. But definitely something to have on hand if ever needed.

Have a slow leak and tried 5 treatments per instructions then tried 3 more treatments with 3 times the quantity the directions said. The leak is about 2 gallons every 24hrs and this didn’t slow it down at all. I wrote a truthful review on this product and the company reached out to me and gave me refund on the product, i didn’t not request one. They did so on their own merit. So far that I’m changing my 2 star review to a 5 star because it may not of worked to fix my leak, but if you have a money back of the product doesn’t work on a slow leak then you have nothing to loose. Makes it worth the risk and I’m tempted to purchase another bottle and try it again.

Advised to use by a Hot Tub Electrician. No Result after 3 Doses, so basically did not solve the Leak.

Waist of money. I tried it in my spa of about 500gal, run it about 5 times as instructed without result. The spa looses 1/2" a day in the pluming and still it did not fix it. Other Fix a Leak worked.