Very good. They are compact Coralife fixtures on the tank, for now. I have the components for a MH fixture on order. I will be making a 3 bulb 250W 14k fixture for the tank. I am running a basic sump. But I also am in the works of building a 90 gal fuge. I would love in the future to be able to also build a small frag tank to keep my hobby funded.....