Marlig IndustriesSeal Marlig Fix Pool and Spa Leak Sealer-8 oz

I had a leak coming from the hardest fitting to get to - the drain in the bottom well of the spa. I removed the front and side panel to find the leak and my friend saw it under the middle of the tub, right where the drain elbow is. We added one full bottle since my spa is 450 gallons and I ran the main 2 pumps for 20 minutes, 6 times per day for 3 days.I only have a very small drip now that as far as i am concerned is acceptable. There is no way to really get to this fitting other than draining the spa and then tilting the whole thing up to access the drain. Follow the instructions exactly. I also agitated the water in the tub with a broom to stir up the material as it is heavier than water. I did this stirring every time I ran the 2 main pumps. I did have to do this for almost three days to get it to the point of the one drip per hour that I have. I also left a small pie pan under the elbow to capture and evaporate any water.We did contact the company and they suggested that we drain the spa and do another application.We had a thought that the leak could be in one of three spots: flange to tub, cracked elbow or leak from the tube that is glued to the elbow. I applied a marine-grade silicon caulk to the drain flange/spa surface to try to minimize any further leaks.We added some die penetrant and could not tell where the leak was but did confirm that it was the drain. We emptied the drain line and added 1 oz of stop leak material to a gallon of water and poured this right into the drain line. We then filled the tub again and the company CS team member said to get a piece of tubing and apply the rest of the bottle right over the drain and then let it sit for two days before turning on the pumps. Guess what, no leaks! Amazing.I have checked several times over the last two days after the second application and no leaks. I turned the heater and pumps on to filter any residue left in the tub and we should be good to go once the chemicals are added.Overall, this product is amazing and if my friend had not told me to try this I would have had to lift the spa and replace the fitting. I would try this on any spa leaf first and see what happens. GREAT PRODUCT!

My Hot Springs spa is 30 years old and I have performed several repairs over the last 7 years that I have owned it. It still works fine and it meets my therapeutic needs. I recently moved 700 miles and loaded it on a trailer. At my new place I set it up it and it had developed a small very slow leak. I tried finding the leak but it was obviously coming from inside the styrofoam insulation. No way could I find it. While searching for a new hot tub and being shocked by the cost of a new one, I came across Marlig Fix A Leak. At first I thought, no way could this work. But the reviews made me want to take a chanceOnce I received the bottle I followed the instructions removing the filters and poured in the bottle. By the very next day there was no more leak. The instructions say to drain the spa and let it sit for a few days to cure if the air temperature is not going to be too cold. Well it is very cold, below freezing at night here, so I opted to not drain the tank. I did replace the water (330 gallons).It has now been 25 days since I used the Fix A Leak and the patio is still completely dry. I am truly amazed and very happy! This stuff actually works!!!Update: one week after the above review and singing, its praises, the leak returned. I’m going to order another bottle and try it again.Update. So I ordered another bottle. This time I waited for Spring and warmer weather. I followed the directions once again and let the hot tub run on high all day. Then i I drained the tub and let it sit empty for an entire week in the warmer weather. I refilled the hot tub and no more leak. That has been six month that I did the second treatment. I think the key was to let it sit empty for a few days. I use t hot tub almost daily and in six months not a drop leaked out. This stuff really works but do empty the spa after treatment and let it sit for a few days.I am very happy that my now 31 year old hot tub still works great and doesn’t leak! I upgraded my review to five stars!!!

Have used this product and before. It will stop leaks in your hot tub but not forever. When hot tub guys want to charge 150 an hour you can buy this a few times before you call them. Stops leak but may block a jet or two. At least you know its working.

I doubted it would really work to seal some drips in my old hot tub's pipes but it even sealed dripping gate valves...what a great product.

Works only for a short time

I bought this product because of reviews but now very disappointed. Two bottles for my small 5 person AR500 with a small leak and zero results. I called support yesterday and no call back.I feel ripped off and left with two empty bottles of promise. I would not recommend this product.

Well worth the money! I followed the directions from my spa repair specialists (not the directions on the bottle) and it worked great! Remove filter, drop temp to below 90, add the liquid and turn spa jets on at high speed for 4 hours consistently. Then leave Spa on regularly for two days then add the filter and enjoy. No left over residue, no more leaks and my spa was leaking so bad I was ready to dump it.

Had a pretty steady leak and used a bottle of this. Leak stopped for about 2 weeks and returned but less. Used a second bottle and leak stopped for about a month then returned but very slow leak. If my tub sat on the ground or concrete, I'd just add a half inch of water per week and not worry, Unfortunately, it sits on my wooden back porch, and I fear rot is waiting to find it. Going to try again before I buy a new tub. They cost twice what I paid for this one.