Use accurate, sensitive scales to weigh chemicals when treating small volumes of water such as the amounts in hauling or holding tanks, hatching troughs and cages. If a suitable scale is not available, commonly available measuring spoons and cups can be used. Accurate spoon and cup measures must be used. Inaccurate chemical measurements can harm or kill fish or fail to do the intended job. Using the tables The following tables of chemical treatments explain how each chemical can be used and give the amounts to use in various water volumes.
Some tables give varying doses used under different water quality conditions.
If necessary, use the Measurement Conversion Tables to convert volume measurements to weights of specific chemicals. Then choose the chemical treatment you prefer and use the application rates in that table. An acre-foot is a unit of volume having an area of 1 acre and a depth of 1 foot. Acre-feet are calculated by multiplying the pond area in acres by the average depth in feet. A cubic foot is a unit of volume calculated by multiplying length times width times depth, all measured in feet.