Help with temps please

[cmoo]

Just upgraded to a 40 gallon ExoTerra tank and I'm having difficulty getting the cool side temps high enough. Currently using a par38 60 watt halogen flood for the basking spot. Basking temp is 105 degree F directly below the light, but quickly drops as I move away from that spot. Cool side is 74 degrees F. Temps are taken with an IR thermometer.
Do I need to switch to a higher wattage par38, add a second basking light, or a CHE?
Pic of enclosure. Substrate is tile. Basking platform is slate. I have a cover over the open part of the screen top to keep heat in.
Thanks in advance!

 

[CooperDragon]

I'd keep it just as it is. That's a good basking temp and a nice gradient across the tank. Plenty of options to choose from.

 

[Rankins]

Sounds good to me also. I have some reptile enclosures that are over 6' long. I don't worry about the cool end temps. About 2/3 the tank has the correct temps, so unless my house is excessively cold..cool end temps don't matter much.

 

[cmoo]

Thank you. So the sharp drop in temps right outside the basking area is okay? It drops from 90s to 80 in a matter of inches. Just want to make sure she has enough options. She has MBD and has difficulty moving around, so I try to make things as easy as possible for her (read: she is completely spoiled!)

 

[CooperDragon]

It may not be a problem. It depends on how wide the basking level temps are though. I like to have a diameter that is at least as long as my dragon to allow for even basking. If it's not that wide, I'd try a higher wattage bulb and raise it up higher on an adjustable lamp stand to create a wider beam and see if that helps. I have my lights suspended over my tank (same tank you have).