Hi, unfortunately there was a broken glass on the UV lamp.
Delivery is very fast. However the manual is half in chineese half in very bad english. Many thinks are left unexplained. There is strange piece of foam packaging material around UV lamp inside glass container. Didn't manage to get it out. Pretty sure it is not supposed to be in there. Overall quality of the filter is more or less fine. Works fine. Don't know what kind of UV radiation is really generated by the UV lamp and how much different algae stuff will be affected by it. Hope the filter will last long.