Competition is no match By Scott on 9/10/2017Scott would recommend this product to a friendI have owned a Emperor/pentair 50 watt UV high output sterilizer for almost 5 yrs. These T6's from BRS last 13-15 months. I tried one from EBay for a few dollars less and it lasted a few months less with less clarity of water. My 160 salt tank is crystal clear and disease free with the above replacement! Would highly recommend these replacements. You spent a lot of money on the best sterilizer so go with the best bulb replacement!