Lee's Economy Gravel Vacuum (Regular) Clams & Scallops keep the pump covered and

keep the pump covered and shaded while maintaining sufficient ventilation to prevent heat buildup

however it is prone to being injured by other corals

which may be nearly any color of the rainbow

Inspect the filter

Lee's Economy Gravel Vacuum (Regular) Clams & Scallops keep the pump covered andLee's Economy Gravel Vacuum (Regular) Lee's Economy Gravel Vacuum (Regular) is a general purpose aquarium gravel cleaner for removing debris from substrate while performing routine water changes. Regular Gravel Vacuum for Everyday Maintenance The regular size offers a balanced tube width and length for common aquarium cleaning jobs. It is well suited for hobbyists who need a practical gravel vacuum for ongoing substrate care and scheduled water