If you insulate the base, back and sides of the tank with 1-2 inch thick polystyrene foam sheets, it will help the heater keep the water warmer. A coverglass on the top of the tank can also help trap heat in the water.
I don't know what the hood is like but you can buy LED strip lights that don't take up much space and might fit in the hood to provide a bit more light. Check out the local hardware store for LED lights.
I don't know what the hood is like but you can buy LED strip lights that don't take up much space and might fit in the hood to provide a bit more light. Check out the local hardware store for LED lights.