I was seaching the web for alternatives to GreenCut water table additive and ran accross a product buy Dynaflux called "PWT Water Table Treatment". Does anyone have experience with this? It is designed as a corrosion inhibitor specifically for water tables. The chemical component is a Sodium Silicate powder that you mix 5lbs per 100 gallons of water. I'm contacting them on the price to see how much it is. They sell it in 100lb canisters.