Stone is clogged.
ok so this machine works amazing. At first I freaked out because 2 uses of doing ozone oil the bubbles were not as strong anymore and completely stopped but it was working well for water which means the machine was still working. So I decided to boil the stone to melt of any oil that my have dried inside of it from prior use and boom! now it works even better than when I bought it. Boil the stones and maybe 1 drop of dish soap will do you a miracle.
Rating: 5 stars