Since I started this thread, I've ordered and received the Aquatop 5W inline UV filter. My tank is still empty, so it will be awhile before I get to use it.
As many of you have already pointed out that many of you already use UV for preventative purposes. And, that's exactly my reason for getting this.
True, I think it's 80% of the earth's oxygen is produced by marine algae as one of you pointed out, but I just don't know what other type of air borne bacteria would be emitted from the tank if and when my cleaning habit is neglected.
The tank is in my office as one of you assumed correctly. However, I am in the process of converting the office into a nursery, and I don't have another room for the tank where there is less sun exposure. The tank is staying in this room for now.
So, that's why I am being a bit more careful about what bacteria might emit from the tank.
But, having the tank treated by UV could mean I might have less fish and shrimp deaths as well. So, I see a lot of positives in using an UV. The only negative I was worried about is whether nitrifying bacteria would be killed.
But, since the bacteria mostly live in the canister and in substrate, I guess I wouldn't have to worry about that since the UV I got is inline, so it won't expose nitrifying bacteria to UV rays.