Some hot tub leaks are a bigger deal than others but what are you looking for? There are a few common leaks to keep in mind when trying to find the source.The big one the most people worry about first is a plumbing leak. These are actually the least common however often do require a more professional approach.
More common is a pump leak. Look closely with a flashlight to determine if the leak is caused by a seal or a union.
A spa filter leak is another likely cause. These leaks can be caused by filter ring, gasket, or o'ring
Spa lighting leaks can be seen by shining a light around the fixture. A light can easily crack or the lock nut can loosen causing a leak.