Try calling the plant where they make a lot of the Aquamax feeds in Richmond IN. See what they have to say.

http://start.cortera.com/company/research/k2j6krl0n/purina-mills/
http://www.waynet.org/waynet/spotlight/2008/080324-purina.htm


aka Pond Doctor & Dr. Perca Read Pond Boss Magazine -
America's Journal of Pond Management