There were a bunch sold in Cali that had poles from a source that was coating them with something that outgassed a chemical that was toxic to plants. This is no longer a problem, and was only an issue on certain tents.
I like the product very much and have personally helped erect a couple of them for friends- they are even sturdier than the pics in the advertisements make them look!
Expect to run a 600w switchable in there, as that was what they were designed for.