Have been talking with a new chemical supplier, he is telling me about Nutrisphere, he says it is a lot cheaper and will out perform Hydrexx. He tells me mix rate of 6oz. per 1,000 gallons. At that rate one jug will treat about 120 tanks???? A 2.5 gallon jug is $300.00. I question him on the ratio because when I use Hydrexx the mix rate depends on how much urea I put in the tank, He does not give me a definitive answer so I look it up on the net to find mix rate. Still very vauge the label for liquid says .5% total ratio for mixed tank? Would this be 1.5 gallons of Nutrisphere for a 300 gallon spray tank with 150 lbs of urea???? Worst label I have seen yet.