how to fix the lack of bubbles
This is a great product but does have a flaw, easy to fix though. When I received mine the bubbles did not work at all. If this happens don't return it. Just flip it over so the base is up and loosen all the screws on the base by 3/4 of a turn. Then fill it up and it works perfect. Easy fix. After I did that, it worked perfect.
Rating: 4 stars