How many cups of copper sulfate equal a pound?

Answer 1

If it' relatively fine ground copper sulfate crystals, NOT ROCKS and NOT FINE POWDER 1 cup of copper sulfate fine crystal should weigh approximately .7 US pounds. that number should be good enough to calculate copper sulfate to be used to treat a cesspool but not close enough to calculate chemical reactions. A 300 gallon cesspool requires 3 pounds of copper sulfate twice a year to keep tree roots from growing.