So let me try to make this story short. I basicly got this UV sterilizer 3 1/2 to 4 years ago used from a friend of mine that owns a pet shop. The previous owner and I invested in the sterilizer for our saltwater aquariums. The unit was pretty new, I think it had been used for a year or less. Used the unit for my 90 gallon saltwater tank for approx 3 1/2 to 4 years with really no problems. I even moved a year ago and hooked the unit back up to my tank with no problems. Every once in a while i would have to tap on it alittle when I plugged it back in after doing a water change on my aquarium. 6-8 months ago I notice that I had small puddles of water around my aquarium on tile floor or stuff under my tank was wet( I have unit sitting ontop of my home made wet dry filter under my tank. Thought at first it was just water splashing from where it pours into wet dry filter. Negative,noticed one of the halos on unit was leaking alittle. At this time it was just a constant drip of water, which over months increased to a small squirt of water at times. Took care of that by placing something over leak where water would drip/stream down instead of squirting up and weting my tile floor. Have notice increase in water on my tile floor last couple weeks. Got off work one morning to find that the halo had started squirting so much water out of aquarium that the water level got low and my water pump could not ciculate water in aquarium. This caused my saltwater fish to have a lack of oxygen over who know how many hours!! Almost lost several fish, ended up that only my lunar wrasse died from inccident!! I am upset, but I did get 3 1/2-4 good years with this sterilizer!! So does anyone know how to fix the halos to keep them from leaking or should I just buy a new sterilizer??? Halos are not cracked and it is just 1 halo that needs repairing. Any ideas?????? Over all a good product.