Suction harvesting - Diver assisted suction harvesting (DASH

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DASH is an environmentally friendly, chemical-free alternative to remove aquatic weeds.  

Suction harvesting is the removal of plants using a diver, suction tube, a unique set of pumps mounted on a boat, and a bagging or filtration system. Suction harvesting is a viable means of plant suppression because the entire plant is removed in its connective rooting system.