I looked all over the net for a 15" T8 6500-6700K fluorescent bulb. There is very little selection in this size, and all of them are 14 watts (which will yield about 2.55 wpg in my 5.5).
The only product that gives a value for K is a 8500K bulb. The description says,
"EMISSION SPECTRUM CLOSELY MATCHES ADSORPTION CURVE OF CHLOROPHYLL-A ,8500K HIGH INTENSITY LAMP WITH PEAKS EMISSIONS IN THE BLUE AND RED REGIONS TO MAXIMIZE THE PHOTO BIOLOGICAL PROCESS IN PLANTS. IDEAL FOR PLANTED AQUARIUMS AND TERRARIUMS."
All the other bulbs just say that they are good for plants, but do not mention *K.
This is the 8500K's link (Big Al's):
http://www.bigalsonline.com/catalog/product.xml?product_id=23607;category_id=1849
Which is a better decision- the mystery bulbs or the 8500K bulb? I did purchase an Energy Saver Color Max 14 watt bulb, but it gave off a similar purple color to the original bulb, so I'm going to return it.
The only product that gives a value for K is a 8500K bulb. The description says,
"EMISSION SPECTRUM CLOSELY MATCHES ADSORPTION CURVE OF CHLOROPHYLL-A ,8500K HIGH INTENSITY LAMP WITH PEAKS EMISSIONS IN THE BLUE AND RED REGIONS TO MAXIMIZE THE PHOTO BIOLOGICAL PROCESS IN PLANTS. IDEAL FOR PLANTED AQUARIUMS AND TERRARIUMS."
All the other bulbs just say that they are good for plants, but do not mention *K.
This is the 8500K's link (Big Al's):
http://www.bigalsonline.com/catalog/product.xml?product_id=23607;category_id=1849
Which is a better decision- the mystery bulbs or the 8500K bulb? I did purchase an Energy Saver Color Max 14 watt bulb, but it gave off a similar purple color to the original bulb, so I'm going to return it.
