Heating problem with Daylight Blue bulb

[ErnieFrog]

I have a Zoo Med 40w Blue Daylight bulb above my 10-Gallon tank for my PacMan frog. I also have a Zoo Med Thermometer/Hygrometer in the bottom of the tank. The Humidity level is good - The Heat level never goes above 74-degrees. So, is the problem the light bulb or the Thermometer/Hygrometer giving me inaccurate readings?

[Bynny Ribbit]

Is your Thermometer/Hygrometer the dial version or electronic one? I've heard the dial ones can be inaccurate. Also, do you have a light stand for your dome light or does it only sit on top of the screen? Depending on these factors, you may have to compensate for the room temperature, get a 60w bulb, and make proper adjustments.

[ErnieFrog]

I have a dial version thermometer/hygrometer - the light fixture sits on top of the screen. To me, it doesn't look like the dial moves at all -
it still reads 74-76 degrees and 80% humidity.

[Bynny Ribbit]

I see. It would probably be worth it to invest in electronic ones so you know the readings are more accurate. If you do get those and it turns out the temp is still too low, then you can get a warmer bulb.

[ErnieFrog]

I am already using a Blue Daylight Bulb 40w. I have looked into better thermometers/hygrometers, but they are all reviewed
the same by users. None of them work that great according to what I have read. So, what is your recommendation as far as
a thermometer/hygrometer?

[Bynny Ribbit]

Sorry if this wasn't clear, but I was recommending to get a new thermo/hygrometer and then seeing if the temperature is still low. If that is the case, it stands to reason you would need to upgrade to a 60w blue bulb.

I use Zoomed, but you can look up "best reptile thermometer hygrometer" in an internet search bar and find areas of discussion around this topic. You'll find that people prefer different brands due to their own experiences, so my recommendation is to look up what you can and use that in your judgement.