Fred185, I am unsure on why this would be the case, short of some odd regulations regarding farm material handling in those states. That would be a tremendous amount of Calcis. While every pond is different and a soil test is the best way to determine the exact amount you need, I have seen decent results from Calcis applied at about twice the recommended rate. 10-20 gallons per acres seems similar to results I would expect from adding 1-2 tons of agricultural lime per acre but I work in a very acidic region of East Texas that may be diminishing the products normal effectiveness. If you have a pond less than an acre or so and no good way to move several tons of lime around, Calcis is likely a good option for you. If you get in touch with the folks over at BioSafe they may be able to give you a better explanation for that disclaimer on the label. And if you do, let us know what they say!

“Never wrestle with pigs. You both get dirty and the pig likes it.”

― George Bernard Shaw