Hello! So we got a bearded dragon. He/she is the best! I have it in a 20 long terrarium. I know....I will need to upgrade VERY soon. The basking temp is on target, however the store employee sent me home eith a arcadia t5 7% with reflector.... The height is only 12 inches and there is a mesh screen. I'm very concerned about the lack of uvb. I am reading conflicting info on t5 and t8. The basking spot is 9 inches from the top currently. We want the best for our bearded but need to change this lighting asap until we upgrade. Our bearded is eating well and active. Is a t5 10 too powerful to sit on top? Should we opt for the t8 10 for now? Thanks in advance!