A question to the forum...Many folks here on the forum fertilize their ponds to get a bloom and water visibility of 18 to 24 inches because they want to raise fish. Bob L. provides that you need to have an alkalinity of a minimum of 20 ppm to get a bloom, no matter how much you fertilize. In this case, Brett does not want a bloom. Wouldn't he want to stay away from limestone and do what it takes to make the water more acid?

Brett,

Just because your water is very hard does not mean it is high in alkalinity. They are different critters. Do you know what the alkalinity of the source river water is?

Last edited by Bill D.; 11/11/19 08:19 PM.
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