Okay....so then I shouldn't change the bulb? Wow, this can be confusing stuff. Right now, I am going to take them out, give them a bunch of calcium dusted crickets in a separate feeding bin, do a full change on their water, freshen up their moss and go from there. Still just the one frog (out of 7) with a leg spasm, so other than doing the above, I guess I will just have to wait and see.