The minute I set my tank up I started getting advice from well-meaning clients in my shop. One stood out. He wants to trade me a powerhead, UV sterilizer and a couple of pounds of Fiji rock for a tattoo. I figure this to be a good deal, as I'm sure I can sell the sterilizer. Is there any reason for me to use a UV sterilizer on my 10- gallon nano? I have a 20lb 3" DSB and 14 lbs. of LR with a skilter (to be removed one day)?