Great thread guys .

Bill I have a question about the last sentence of your post regarding the light wavelengths used by bluegreen algae vs. those used by green plants. I understand the sentence but I don't want to draw the wrong conclusion from it. I will ask the question in a general way . What effect does the proper use of registered pond dye { that containing the correct acid blue and acid yellow content} in a pond have on the plankton base in the pond ? Does the pond dye block out those light wavelengths that are necessary for plankton growth ? Thanks in advance for any help on this matter. ewest