Originally Posted by deepseadan
Zooxanthellae is an algae / plant and under what spectrum does algae grow best under? Full spectrum with lots of red and green. That's why many people don't like to use 6500k or lower bulbs anymore. For a while I tried ati's 15000k bulbs, but found I had better results with Sps
under a mix of 6500k and10,000k t5 bulbs. Now I mix ati blue plus's, 10,000k and 6500k. Red is needed, but when in nature does aquatic life only see red (like your experiment)?
Zooxanthellae is a major component with the corals survival and color.
honestly i would try a fiji purple over a 6500k. the target of red and green as well as the addition of some blue makes the lamp a great stimulate for growth and does not give you that yellow look that a 10000k and a 6500k would give you.
my current setup is 4 KZ lamps 2 superblue, similar to the blue plus, 1 fiji purple and a corallite II 14000k. alot of targeted spectrums and a nice look
even stil la 12000k aquablue special will put out a great spectrum for coral growth.
plant life grows best uber low kelvin bulbs. a 3500k will probably stimulate the growth better as there is more green and red to give that warmer yellowish look where as 6500k daylight has much more blue. again in nature reds are filltered out so a full 6500k spectrum will not reach the coral even a higher up SPS
which is why higher kelvin lamps are used (eg 14000k), but with todays LEDs and T5 full spectrum technologies it is just so easy to mix and match bulbs to target different wavelengths for growth and looks