2.5 Stars

I bought the first sera 130 UV filter 2011 because it was leaking after about 2 years (possibly rubber seal filter head porous?) Now after 2 years against the exchanged new and the same model but that was defective and was replaced as the filter head very loud drive noise makes (hum and rattle). The enclosed hoses are somewhat inflexible, the pipes must be shortened if necessary, and that is only possible by sawing. , On the effectiveness of the integrated UV lamp can say it brings a bit. The lamp is actually defective after approximately 1 year use. The filter can I Recommend restricted because there is almost nothing like the big brand manufacturers (unfortunately) therefore 2.5 stars