So what you are wanting is a T5HO fixture and either a 5.0 reptisun bulb or a 6% arcadia bulb. You want the 24 inch fixture because you will need to upgrade the cage size to a 24x24x48in sized cage.Me again. Sorry for the handholding but please can you send me a link to exactly what fitting and bulb I need for the UVB? I'm trying to source it here but can't get it and confused with the descriptions im getting online. Especially for my 18x18 inch cage.
Sorry again but I want to get this right. Thanks
Look for ProT5 by Arcadia. This comes with the fixture and the bulb. Choose 24in fixture and 6% bulb.
Let me know what you find.