7. Sufficient Lighting
We recommend the use of metal halides with a color temperature of 10,000 – 14,000
Kelvin (e.g. BLV), since this bulb produced the best results in practical experiments. In
these tests, these bulbs brought the most intense and best colors in corals grow-out and
holding tanks. Because the color of this bulb appears to yellow to the human eye and
many prefer the bluer spectrum, it is possible to supplement it with the appropriate blue
bulbs. We use exclusively T5 bulbs because of the highest efficiency available with the
reflectors. The intensity, as well as the spectrum of the light, plays a major role in coral
coloration.
Or: Another real alternative is lighting strictly with T5. We achieve great results in our
tanks as far as growth and coloration is concerned with Korallenzucht Coral Light and
Fiji Purple bulbs. We use a combination of 2 ; 4 (Fiji Purple/Coral Light) at an intensity
of approximately 550 Watts per m2. The bulbs are replaced every 6-8 weeks to assure
best results.