Add the lime suggested. In the meantime read up on ponds here. The rest of the stuff can wait until you understand what you are being offered and decide if you think it is needed.
The green stuff looks like a plankton bloom. The lime will help with the plankton bloom daily swings and help clear the water. The other stuff like clearing the dam should be done.
Without specific goals it is best to learn the basics of water quality and pond biology and then you can decide.
CJ could help with an eyes on look.
Last edited by ewest; 09/09/12 07:50 PM.