Temp only get to 23.3C with CHE :( plz help

[seks]

5.5 inches ( for bulbs or ceramic heat emitters up to 75 watts)
8.5 inches (for bulbs or ceramic heat emitters up to 150 watts)

i have the flukers w/dimmer ( 5.5 I believe ) and a CHE 60w and no it doesn't stick out, if in doubt do what I do open the packages and screw in the bulb n look lol

I guess I should just go with 8.5 since the next bulb after 60W is 100W if you look at either ET or ZM

Also looking at the Zoo Med clamp lamp safety cover 8.5" LFC-12. Looks like it should be able to just clip on the rim of the flukers