I agree with Mike. Its about the chemistry. I posted earlier on the possible effects on a pond in a calcite pit. As a general matter pond water in the end reflects the nature of the dirt upon which it sits (including its watershed). Recall that water is a tremendous universal solvent. As Bob says if it can dissolve it will in water.

Here is an example. Central Fla has good rain water - clean, clear water that precipitates through sand and pines . At that point in its journey it is acidic with low productivity. The water being acid should be unproductive and crystal clear . But Fla is land deposited on a limestone reef from long ago and the acid water as it precipitates down leaches out (dissolves) the limestone. Parts of central Fla also have phosphate deposits (the middle # in fertilizers which is what is missing in most unfertile ponds) that are mined leaving great holes (lakes). When the ground water (springs) emanates from ground with the dissolved limestone and gets into the excavated phosphate pits it acts as a solvent and picks up the missing P and is as near perfect as possible for productivity. Nice plankton blooms for most of the year. While most good well managed fertile ponds can produce fish (carrying capacity) at around 400 lbs per acre the phosphate pit lakes can produce/ carry 3000 lbs per acre. Why - because the water reflects the soil from which it comes and in this case near perfect. Clean water with great alkalinity and the right nutrients (P). The perfect natural chemistry for growing fish.

What is the source of your water ? Calcite (lime source) can be either dissolved by groundwater or precipitated by groundwater, depending on several factors including the water temperature, pH, and dissolved ion concentrations. Although calcite is fairly insoluble in cold water, acidity can cause dissolution of calcite and release of carbon dioxide gas. Calcite exhibits an unusual characteristic called retrograde solubility in which it becomes less soluble in water as the temperature increases. When conditions are right for precipitation, calcite forms mineral coatings that cement the existing rock grains together or it can fill fractures. When conditions are right for dissolution, the removal of calcite can dramatically increase the porosity and permeability of the rock, and if it continues for a long period of time may result in the formation of caverns. If youe water comes through the calcite and picks up alkalinity it may be very clear good quality but lacking P. If it picks up the P from any source you could have a tremendous plankton bloom and be very productive (for fish). If that occurs you will have to change the chemistry to have clear non-productive water.