A safer, longer lasting way to reduce
high pH is to add carbon dioxide, which
acts as an acid in water. Carbon dioxide
levels can be increased by adding organic
matter such as cracked corn, soybean
meal or cottonseed meal to ponds.
As organic matter decays, it releases
carbon dioxide. This method does not
reduce pH immediately, but it is a safe
and relatively dependable practice that
yields results rather quickly. Generally,
applying about 15 pounds per acre daily
for about 1 week should prevent pH
from rising to undesirable levels. This
amount would be in addition to any
daily application of organic fertilizer
already planned. The total daily application
of organic matter should not exceed
50 pounds per acre. The decay process
that releases carbon dioxide into the
water also uses dissolved oxygen, so
adding too much organic matter could
reduce dissolved oxygen concentrations
to dangerous levels. Dissolved oxygen
concentrations must therefore be measured
regularly and the pond aerated,
if necessary, to maintain satisfactory
oxygen levels.
A safer, longer lasting way to reducehigh pH is to add carbon dioxide, whichacts as an acid in water. Carbon dioxidelevels can be increased by adding organicmatter such as cracked corn, soybeanmeal or cottonseed meal to ponds.As organic matter decays, it releasescarbon dioxide. This method does notreduce pH immediately, but it is a safeand relatively dependable practice thatyields results rather quickly. Generally,applying about 15 pounds per acre dailyfor about 1 week should prevent pHfrom rising to undesirable levels. This amount would be in addition to anydaily application of organic fertilizeralready planned. The total daily applicationof organic matter should not exceed50 pounds per acre. The decay processthat releases carbon dioxide into thewater also uses dissolved oxygen, soadding too much organic matter couldreduce dissolved oxygen concentrationsto dangerous levels. Dissolved oxygenconcentrations must therefore be measuredregularly and the pond aerated,if necessary, to maintain satisfactoryoxygen levels.
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