12 oz crystals. Anything liquid = already diluted to some degree = buying expensive water = waste of money.
12 ounces in 30 gallons of water = 0.3% by weight. Kind of handy, as the Sherwin Williams stuff is sold in a 12 ounce tub. I buy mine in larger quantities as I use a fair amount of it.
Last edited by wrk101; 10-09-11 at 04:29 PM.