The most common inflatable hot tub puncture, and finding them requires using the tried and tested, low tech method of soapy water. Just mix a little soap and water in a spray bottle. Make sure it is thoroughly combined and mixed before starting. Then go round the hot tub liner in a methodical way, checking just a small section at a time.
One common method is to add food dye or other coloring to the water. The leak location is most likely where the spot shows up first. Another way to know where the leak is coming from is to let the water sit for some time and see where the water level stopped dropping. Look around the water level. If it touches the lights, waterfall, or jets I fixed a leak in my coolant tank (which is the exact same plastic) using a few strips of plastic* cut from a spray bottle I bought at a hardware store. You can either use a heat gun or a soldering iron to melt the plastic into place. Just be careful of burning the plastic. This video is a good guide. Even though it's a much larger tank, the I recently had a similar experience--moved into a place where the tub was a brand new installation. The caulk was coming apart after less than two months. I re-caulked the tub and used the "fill the tub" method, and everything has been fine since. I'd like to take credit, but I'm certainly not a pro. I credit the method. –Vacuum the entire hot tub of any debris once you are done with all of the areas that are in need of repairs. Wipe each repair area with a soft cloth and acetone make sure you get the inside of each repair. This should dry in about 20 seconds. If you are repairing a hole follow the directions in the Fiberglass Repair Kit and use the fiberglass
If your tub is in good shape overall but suffers from issues with the water supply or drain, repairs may be needed to improve water pressure, fix leaks, or correct drainage. Replacing controls, faucets and showerheads can improve the water supply to your bathtub, while repairing supply and drain issues can prevent backups and leaks that could T4wZE.