Question about building a tub

[seeya205]

she's in a tank right now,but im switching her to a tub...and no the room isn't kept heated,the room temp is about 78-79 right now

She's in a 75 gallon tank right now...YES I KNOW THIS IS VERY BIG FOR A FEMALE BALL, THE TANK WAS FREE THAT IS WHY I TOOK IT

but now back on topic...she's going from the tank to a tub...a 42 quart sterilite tub...and i know the only UTH to use is the 1-5 gallon zoo med reptitherm rh7 (thats safe for tubs)...

my question is will a heat lamp over it be necessary?

You will need a larger uth than that! If controlled with thernostat or dimmer(which you need to have), any uth is safe with any tub! I would use a 10- 20 gallon size uth at minimum! If the room temps are 78-79 then you don't need any lights! I use the lights in winter time because my room temp is only 70!