As I gather more data I will keep updating these charts and adding new ones. If you want a light that isn’t included in the charts you can study the reflectors used in the light you want, and compare them to the photos following the charts to see which charted light is closest to the one you want. Fluorescent tube lights produce about the same light intensity for any length of tube, from about 24 inches to at least 60 inches. The longer bulbs are proportionally higher in wattage, so that the bulb wattage is mostly a measure of the
Modern Aquarium - Greater City A.S (NY)
bulb length, not the bulb brightness. For bulbs shorter than 24 inches this may not be true. CAUTION: Not all lights use a true, full power HO ballast. Some cheaper models use lower power ballasts, and will not produce as much PAR as those with good ballasts. an example. One layer of window screen over the bottom half of each bulb, right on the bulb, drops the PAR by about 30%
August 2017
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