I grandpa has just recently dug out his pond. It has a rock bottom and is about 7 foot deep. The FA is about to take over. He isnt much worried about it but I have some Hybrid bluegill in there and some nice catfish. He says the cattle isnt worried about the moss. But he said it would look better if we could do something about it. I have pulled most of it out and added some dye to try and help the growth of the moss.

My question is is there any way to treat this pond without hurting the livestock?