Dont be fooled though, chalices do like high lighting. I always thought they liked low lighting, but I have 5 chalices under 150 Watt MH with 24 watt T-5 actinics and they are blasting out some serious colors, tyree pink watermelon is getting crazy, tons of pink and great growth. They are about 12 " from the bulb. Just my experience, I know they can change colors under different lighting, but so far mine are loving the higher lighting.