Product Code | Fitting | Kelvin Rating | Wattage | Recommended Depth | | HD150R7S20K
| Rx7s double ended | 20,000 | 150 | Up to 60cm |
Why should I use a metal halide lamp?
Metal halide is commonly accepted as the best substitute for nature when it comes to aquarium lighting.
The exceptionally high light output when compared to other lamp types such as fluorescent tubes, makes them a very effective light source, particularly for the larger tank set-up.
Commonly used in marine aquariums, they can also be a very useful asset in freshwater tanks - particularly those where good plant growth is desired. When choosing a lamp for use over a marine aquarium, there are two factors that are important.
Firstly, the light output has to be beneficial to the health of the livestock. This is particularly important in tanks containing invertebrates such as corals (hard or soft), anemones, and Tridacna clams.
A suitable light is one which promotes photosynthesis by the microscopic algae (zooxanthellae) which live within the tissues of such invertebrates.
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