Ohhhh, it helps it grow!! 'Scrubber' made me think it was removing algae.It basically creates an environment for algae to grow. The bubbles create oxygen rich environment and creates water flow over a screen for the algae to grow on. The light is red and blue spectrum light that encourages plant growth.
Cool Beans!!
Have read quite, in the distant past, a bit about tanks with live plants...can't remember half of it tho