These plant lights have the ability to be adjusted in height to provide the right amount of luminosity for each plant. The light is ideal for indoor plants (wavelengths from 380nm to 780nm), and the growth light isn't too big either. The price is reduced from $15.99 to $7.99 when you apply the coupon code "6M3AHRWR" at checkout. Shipping is free for prime members or on orders over $25.