Lighting

Hey guys! I have a pretty basic model going on. Just a glass mug sitting on a plane (table) with a plane emmiting light above it. So I rendered it to see if the lighting was good but the problem is its way too dark. I increased the strength of the emmision for the plane above the mug but there is no change on the render it looks exactly the same. Am I forgotting a simple step or screwing something up?

Thanks in advance!

Both. Check the link in my signature.

@JA12 : Best. Answer. Ever.