Originally Posted by HypnoticAquatic
so do it on top and make a tray for tools? its just a I beam that your going for with out one side trays seem to be vary handy when doing trimming for me at least then id weld another on the side to keep my tools and drill a small hold for any water to drain out to go back into the tank. hell you could even make a tray and have big enough side walls and have a little emmersed set up on top of it just need a very small pump to draw the water up and another hold opposite side to drain out back to the tank. there are plenty of options.
Then you would want to make another LED light to light the plants in your LED light, and another to light the plants in that LED light. etc.