I recently had an emergency where my bulb burnt out. So I installed a UTH and got a new bulb from the pet store. I believe my old bulb was 60w and I grabbed a 50w this time, in hopes that it would do the trick. However, my 50w seems to be not strong enough to keep the ambient temp/basking spot where I want it to be. At night the temp ontop of the substrate where the UTH is gets to be around 83°, but when I woke up this morning it was measuring around 88°. Is this too warm? I already know my 50w is too small to keep my 40-50 gallon tank heated at where I want it, and Everything I read is telling me a 75w bulb is what I need, but I dont want my UTH getting too hot, as it is a pain to remove, and In a hurry I stuck it in the only open spot I had which was near the basking spot. I have thought about moving the hides and everything in his cage to seperate the UTH and Heat lamp. But I dont want to stress him out for no reason. So basically im asking: do I return the 50w for a 75? And will it increase the temp of my UTH.

Any info would be great, thanks.