like a big parabolic reflector ?

http://allamericanhydro.com/products.php?cat=26

this place has a 4 foot one... you can add a light mover and you are set!
Garden Knowm Reviewed by Garden Knowm on . Reflectors Can I get a reflecter that will cover a 10x10 area? It's actually 12x8, but 10x10 should be fine. Anybody? Rating: 5