Pond Boss Forums AQUATIC VEGETATION Controlling unwanted plants Pros and Cons of Pond Dye

The first I got was called "Black DyeMond" as I recall but what was most used was from "Rain Biologics". You can do a Google search and find them I think.

I really have no experience with the blue other than both my wife and I did not care for the shade of water color we saw where it had been used. That was really the only reason the black was tried. It was the only other color found to be available.

Edit: rainbiologics.com

Black DyeMond is by Pond Logic

I saw no difference in the two other than price and fancy label.