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so, i have a UVB? (heat lamp) and a UVA? (florescent lamp) (i get the A and B parts mixed up all the time), but anyways, is it safe to keep the Heat lamp on for 12 hours, like normal, and keep the florescent lamp on 24/7 ? Im asking because the tank is within eyesight in the bedroom, and the florescent lamp makes a perfect night light.

Am i harming the turtles by having the florescent light on always?

Well, you should have "lights out" after about 12 hours. I sometimes cheat and leave the basking light on a little longer if they are still basking, but for the most part, 12 on, 12 off is the way to go, it mimics the day/night cycle.

Since a UVA/UVB lights need to be close to the tank, it is not a good idea to have it on longer than 12hrs. You still need a water heater as a heat lamp is not an effective or reliable way to regulate water temperatures.

The UVB light is flourescent, the heat light is not. Turtles need to sleep in the dark like humans, at least not have a bright light on all night. They will likely be active with the light on, and their sleep cycle will be disturbed.

If you want a night light for yourself, they are quite cheap to buy.