<a href=showthread.php?s=&postid=6630941#post6630941 target=_blank>Originally posted</a> by ahchung
Iwan, I am running 6 x 39W T5HO on my 45G tank with 3 x Giesenman Aquablue+ and 3 x ATI Blue+ using 5 parabolic reflectors (due to space issues). A few days ago I bought an acropora which showed a very nice fluorescent green color under 400W of a 20K MH. Unfortunately when I brought the acropora back to home and put it in the tank it only showed yellow color and no fluorescent green color at all.
Actually this problem applies to most of the acroporas in my tank. The LFS's here are running either pure 400W of 20K MH bulbs or 400W of 14K/20K MH bulbs plus VHO actinic bulbs.
Do you encounter this problem? How do you find the fluorescence effect of the T5HO bulbs?
I don't have the problem with the flourescent colors.
On the contrary:
I just find the corals with fluorescent colors very impressiv under T5. How old are the bulbs?