This black plastic shade screen from a DROP (tm) scrubber even has growth on it. Once removed, all the growth will be on the white Green Grabber® rocky surfaces.
Attachment 8722
Printable View
This black plastic shade screen from a DROP (tm) scrubber even has growth on it. Once removed, all the growth will be on the white Green Grabber® rocky surfaces.
Attachment 8722
Why the black shade screen inside the DROP models? Because the red LED lights are very strong, and they reflect off of the Green Grabber® white rocky surfaces, and this is too much light for new algae growth. So the shade reduces the light until the surfaces are coated with some color of growth, and this reduces the light intensity. That's when the power of the lights are needed to shine through the thick growth.
Attachment 8920
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