Methinks there are other issues besides the new light, though I do think you're going to want to revamp your ventilation a little bit. 30C, or 86F, isn't terribly high, but it's not ideal. If I were you, I'd try to keep the temps between 21-26C. As for the splotches on the leaves, you should try filling out our Troubleshooting Form, which will give people a better idea what might be going on in the soil as well as the environment inside the box.

Take care. :jointsmile: