I have made the call and spoke to the professor, what a great guy to talk to. In less than 10 minutes he has provided the forms for both water and soil testing for a total cost of 24 bucks. I will collect and have them sent off by tomorrow. I think this will be the link I have been looking for to determine the limiting factors which will finally help me to start undertanding my pond and its needs. Again, great info from you ewest. I will keep you informed. Many thanks for the info.