pondfishr :

Look on pgs 9-14 of the Tenn. link above above it goes over lime and fert. But look at pg 46 which has coop-ext. service offices and phone #'s to contact for help. There are easy to use test kits for alkalinity from Hatch but you need to understand what you are testing for and what the results mean. The link above is a good source for your situation. They may even come out to the pond to do an assessment.