I use to run the UV 24/7 when i just got in the hobby but now i run it only when needed.The tank doesn't get a lot of ick out brakes thank God because i try to make my fishes happy.My UV cost me about $180 over the course of 10 years no Meds.Now if i lost $100 worth of fish every yearYes, even if it does kill ich (Not saying that it does). How often do you actually get ich that you need to run one 24/7. and if you don't run it 24/7 then is the costs justified how ever long you do use it?
for 10 years because i didn't make that $180 investment that would be how much?And don't say it can't happen because it happen ALL the time.
I've save more fish lives with it than without it.I value my fish very much i wouldn't what to get caught with my pants down.