It looks like the 18'' Zilla Slimline. With those, it's important to remember to leave the clear plastic off of the fixture in front of the bulb since it will intercept all of the UVB. Those fixtures work well, but are best at a range of about 6-8'' above the main basking area as Karrie mentioned. Moving to a T5 fixture & bulb will increase the effective distance to around 12-14'' if needed.
The plastic is off the bulb im not sure if this is a zilla brand one to be quite honest... so I should put it by her basking area ? Or leave it on the side its on thank you!
On the side? Do you mean back wall of tank or off toward the middle of tank or cool side of tank ? NO back wall it needs to be directly overhead
Karrie