I really want to get much clearer water in my tank I just want very very clean and clear water, tank is an 18.5 gallon mixed reef been up for almost 2 years now. Don't really keep on top of testing as I haven't done that in over a year, also side note wondering what's the cheapest and most effective tests to find. But back to my main point, is it worth it to run a uv sterilizer in a tank so small? Is there a sterilizer that won't make me broke as well?