What size is your 50 gal
tank? That light that you looked at is only a 24 inch kit, and no it won't be enough light. A system with little assemble? This is what I have on my 55 gal
, I didn't want to look at the light fixture, so I bought a standard oak hood from Petsmart, And then added the Coralife 4x65watt retrofit kit, 2 10k and 2 ant. bulbs. The hood was $99 and the light was $180. And no there isn't much work to install the light, I think it was only 6 screws to screw in, and that was it. On the other hand if you want to see the fixture then you can get the standard Coralife 4x65 light in its own fixture for only about $200 at Captive Reefs.