PBW Alternative Using Oxiclean Free and TSP/90

With PBW being rather expensive, I was looking for an alternative for cleaning my brewing equipment. After a Google search, I found this solution on Bertus Brewery website. They use 70% by weight Oxiclean Free and 30% by weight TPS/90. I found Oxiclean Free at my nearby Publix. I obtained my Red Devil 0265 TSP 90 Heavy Duty Cleaner, 4-Pound at Amazon.com. As Bertus Brewery states, PBW also contains a chelating agent, which prevents scaling on brewery equipment. This alternative doesn’t have it. I use 1 oz. per gallon of water to clean my fermenting buckets. I usually let them sit full overnight and rinse them VERY well. Same with my corny kegs.