Instruct: Classify an Amazon review as either positive or negative.
Query: Very short lived

I used this heater on a 50 gallon planted tank running inline with a rena xp3 canister filter. When I switched my tank over to start reef keeping it just didnt seem to work any more. It was only 6 mos old when it croaked. I still have it but haven't tried it again in a year. I am thinking that my initial reef tank was too small and there was not enough tank volume for it to work properly. I now use a Catalina 500w titanium heater in the sump of my 60 tall reef. I wont buy another one I cant trust its reliability now. I have a 3000.00 reef system and need reliable equipment.