UV filtration

I just started a new 30gal tank in my kitchen. Its a very old style tank, probably from the 70's and it matches the old ice box. So there it rests, on top of the ice box. Im going to have Discus is this tank. I have been doing my research on the fish, making sure he won't grow out of the tank too fast, learning about water conditions (having low ph, high temp) and so on. I came across something I have not yet encountered on my five year obsession with this hobby, that is a UV sterilizer. Where does one begin to research such things. What is it? An Ultra Violet Sterilizer is a water filtration device that uses an ultraviolet light bulb to kill microscopic organisms that are free floating in the water. Parasites, viruses, algae and bacteria (good and bad) are the type of things that are "killed" after passing through the ultraviolet sterilizing unit. Some large water purification centers employ some sort of UV sterilization on the outgoing water. These sterilizer units are also sometimes used in outdoor ponds to help control algae growth and they seem to do a decent job.What would be best for my tank? Is it worth doing? Is is too much work and too complicated? Might it overkill the bacteria you don't want to kill? And why not this... why not have a UV light that goes on a few hours a day? It would give the fish the natural lighting they might get in nature, kill whatever its supposed to kill (bacteria wise) as it would in nature and u dont have have crack open your filtration system to add this suppliment filter. Well, here is an answer I found and I think I like it... "Do I really need an Ultra Violet Sterilizer for my aquarium?
For indoor freshwater fish tanks that are well filtered and properly maintained, you really don't need one. Saltwater hobbyists may have a good excuse for getting one because of the high price tags for many of the saltwater species. However, most hobbyists really don't need one if they are doing things properly. Doing things properly would mean using a quarantine fish tank for new arrivals and performing frequent fish tank maintenance."
Well, that is my thought for the day. Don't bother with more work than you need. Do your weekly upkeep and enjoy.