Pro-sol is a brand of water sol. fert. for ponds as per Kelly's post.I think it is 10-52-4. It is marketed under several names-- one is Full Stringer. Mossy Oak also has a product called Perfect Pond {12-48-8} which meets these requirments. Pro-sol was, last I checked, made in north Ala. and is avaliable in Co-ops around the south.I'm sure there are other brands also. Both Pro-Sol and Mossy Oak have web sites that describe their products.ewest