Over the last couple years Ive been testing out KZ bulbs and this time I went all KZ except for my ATI b+ and ATI actinic...all I have to say is that the color and saturation in the tank IMO is better than the other bulbs IVe tried. Worth the extra couple bucks per bulb especially when theyre going to be on my tank for a year. Next time you have to replace bulbs think about KZ new gen, KZ coral light, and KZ fiji purple...looks amazing combo-ed with B + and actinics in my sunpower.