Hot Tub Leak Fix - Trying Out "Fix A Leak"

santacruzpool

Gold Supporter
Feb 24, 2015
845
Santa Cruz, CA
We had a couple of really hot days here in Northern California, and I think it must have expanded the pipes a bit which created a new leak in my Hot Tub.

Over the weekend I took off the panels and tried to find where it was leaking. From what I could tell it was all the way on the bottom under the foam, right where the bottom drain hose hose attaches - in order to fix that at first would require emptying the tub and tipping it up on end and replacing the drain grate fitting. I think the washer down there has degraded over time a bit, and or the fitting needs to be tightened?

I was kind of dreading doing the fix and was contemplating waiting a few weeks for my next scheduled water exchange to do the repair - figured I could just top up the water and let it leak an inch or two a day...

Doing a search here I saw that a few people had some success with the liquid "Fix A Leak" potion and decided I didn't have much to lose, so I might as well buy a small bottle and give it a try. I am always sceptical about magic potions :suspect:

Yesterday I took the filter out and I dumped 1/3 of the bottle into my small tub - the instructions talk about keeping it moving around the tub water as much as possible by brushing etc. However, since I already suspected the leak was at the deepest part of the tub I was fine with the stuff settling there and hopefully fixing the leak.

I came home later in the day to a completely dry concrete pad around the tub - so it appears that the leak is already fixed. I was impressed, and a little shocked, it worked so fast. Maybe since my leak was at the bottom of the tub it made it easier for the stuff to seal that area vs. a leak higher up on a jet body or light housing.

I thought I would pass along my use of it - I am going the leave it in the tub for another day or so, and then filter it out and hope it is a permanent fix.
 
Good tip. Keep us updated if the fix lasts.
 
Update: Looks like my leak has returned after just over 1 week - fortunately it is a much smaller leak.

Of course I had just finished rinsing out the old filter for the last time (I think I rinsed it out 10 times) - I had also just added a brand new filter last night when I saw the leak.

I didn't follow all of specific spa leak instructions correctly - #1 I didn't open up the skirt of the tub and run a fan to make sure it dried out properly #2 I didn't drain the tub after it stopped leaking, like is suggested so that the leak fix can properly cure...

So I am guessing that the wet foam hindered the drying out of the leak, they mention the foam can be wet for weeks.

So my next step this weekend will be to do another dose and actually open up the bottom and put a fan inside to help it cure. At least I can use my old filter to trap the left over leak fix and keep my brand new filter all nice and clean.

It that doesn't work I will drain the tub and repair the fitting...
 
My leak finally returned - after a bit of warm weather a few weeks ago, the tub level dropped a few inches. I think the problem is probably with the bottom drain as that gasket is pretty shot, so I bought a replacement Waterways Low Profile Drain to replace the one in our tub.

This morning I took out the old one with a big flat blade screw driver (wondering if my tub would suddenly empty while I was sitting in it). The old gasket was super worn and had expanded to the point where I don't think it was sealing very well at all. I installed the new threaded part of the replacement drain into my old fitting and tightened it up nice and snug. I didn't notice any water leaking with the threaded part removed, so that was a plus. Now I am waiting to see if that is the fix for the leak...if not I still have more of the leak fix stuff - and I will keep investigating where my leak is coming from.
 
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