I've seen this product at my lfs, which consist of a wire that you plug into an electrical outlet (both prongs are plastic and the ground is the only metal part) on the other end is a titanium rod about 2 inches long which you place in the aquarium. Its supposed to give a good ground to the aquarium water inside. I was just wondering what are the benefits of this and are they really neccessary? I have two tanks, 60g and 40g, the first with mostly south american and african cichlids the other with all africans.