Bubble Tea is the known name for a beverage that has many unusual names. Other names include; tapioca pearl drink, tapioca ball drink, pearl shake, pearl tea, black pearl tea, big pearl, boba tea, boba ice tea, boba nai cha, milk tea, bubble drink, zhen zhu nai cha, momi, momi milk tea, QQ, BBT, PT, and many other names. This drink is far from the sweet tea that you may be familiar with.
Candlepower (abbreviated as cp) is an obsolete unit expressing luminous intensity, equal to 0.981 candelas.
400w HPS = 50000 lumens = 125 lumens/watt. 600w HPS = 90000 lumens = 150 lumens/watt. So you can see that HPS is more efficient than CFL...and as you get into bigger HPS bulbs, it becomes a lot more efficient. There's also fewer hassles with multiple cords and saved money on your energy bill. PAR watt directly indicates how much light energy is available for plants to use in photosynthesis. The output of a 400 watt incandescent bulb is about 25 watts of light, a 400 watt metal halide bulb emits about 140 watts of light.