The book Oxygen Therapies said that you could put no more than 6 tablespoons of 3% H2O2 (Hydrogen-Peroxid) in 1 quart of enema water. So, I took that to mean that I could put 6 tablespoons in my 1st ever H2O2 (Hydrogen-Peroxid) enema. When I told my husband that I put that much in, he said "Oh my word!!! I can't believe you started out at 6!" So, I have learned my lesson. I should have started out slow. I hope that my experience has helped someone else, so they don't make the same mistake.