PH of a pond... why would you dump lime into a pond?

Question

A chemist visits a commonly used fishing pond to test the water. He recommends that the owners of the pond dump lime throughout the pond. Why might he make this recommendation? Consider the pH levels in your answer. Also consider the needs of the living creatures in the pond.

Answer 1

Typically lime has a known PH so it is used in aggriculture to adjust the soil PH up or down as necessary.  However, I've never seen it used in water.  Water will cause a chemical reaction with hydrated lime and create heat.  Typically they use liquid to adjust water PH.  I have seen Dolomite dumped in ponds, which sinks to the bottom and helps stop any leaks through the pond clay liner.  It is also non toxic.

Answer 2

Normally pH require 6.5 to 7.2

If more alkaline micro organism growth more.

But fishing bond may be water acidic nature due to fish flush.

Or water quality. so he recommend lime.

we may calcium carbonate also

Answer 3

Hydrated lime often is applied to ponds in small doses

for reducing phytoplankton growth or to remove carbon

dioxide. The main effect of lime application is to

increase pond water pH.

Applications usually are less than 100 lb/acre, because

high pH following large lime applications could be

harmful to fish. Nevertheless, lime application may

cause pH in pond surface water to increase to 9.0 to 9.5.

The pH will decline within 1 or 2 days as the hydroxide

from lime reacts with carbon dioxide. Lime applications

normally are made in summer when ponds are not

discharging water.