If you have a lot of flow through in this ground fed pond and you are not feeding fish you might not have an algae problem. You also might have a hard time using dye if there is a lot of flow through. What does the water look like so far? I built my 1/3- 1/2 ac pond in low spot and it is fed by ground water. The farmer used to feed cattle there so the ground was very rich in nutrients. I had a bad duck weed problem when it was first dug but seems to be settling down. I also feed my fish so that doesn't help.
Aerate your pond during the day and or run a waterfall to warm your pond to give you more use on each end of summer.
I left an area (shelf) 1-3 feet deep to grow cattail s and other weeds to help tie up nutrients.
