- 1). Place the metal halide light holder in the middle of your upturned canopy and mark the position in which it will be secured. Most store-bought canopies will have a slightly recessed area in which to secure a light unit.
- 2). Drill two holes into the canopy, just slightly smaller that the screws in the two pre-marked spots, and secure the light holder in place by screwing the unit tightly into the aquarium hood.
- 3). Cut the aluminium reflector material to fit inside the full length of the light unit. Apply approximately 1/2-tsp. of the heat-resistant glue to one side of the reflector material and glue the reflector onto the inside of the light unit. Leave the light unit and glue to cure for an hour.
- 4). Remove the metal halide bulb from its protective packaging. Do not touch the glass of the bulb. Hold the bulb by the ceramic ends and gently push it into the socket. Ensure that the bulb is mounted correctly in the socket.
- 5). Remove the second metal halide bulb from its protective packaging and repeat the process, as in Step 4.
- 6). Thread the electrical lead through the pre-drilled port in the side of the canopy and connect to the controller unit.
- 7). Place the glass splash cover on top of the aquarium. This prevents water from splashing onto the metal halide lights and condensation from getting into the light sockets.
- 8). Place the aquarium canopy on top of the tank.
- 9). Plug the controller lead's plug into the timer and set the timer to run between 07H15 and 19:15. Plug the timer into a wall power source and switch it on.
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