Here are some more recent comments about fertilizing and supplemental feeding. To use or not to use? Natural fertility and alkalinity of your pond soil and watershed have a big influence on natural carrying capacity of the pond. Some of the pond's fertility will be bound and unavailable in the non-fish biomass including plants and organic sediment within the pond. Water clearer than 4 to 5 ft indicates lower fish biomass and low current fertility. Fertility can vary throughout the year as recycling of organic materials within the pond occurs.
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