New ecotech glass cleaning robot

Very cool but I definitely see a problem. Very risky because it can hit the sand and on the way up can make some nice scratch on your tank.
 
Lol... That does paint a bad picture. If a grain of sand got stuck under it, it won't know it. You'll come home to a fine line drawn in the pattern of where the robotic magnet cleaner has gone. :|
 
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