I don't clone MJ plants by the way, I clone evergreen shrubs, forsythia, and others. You can also clone trees with a cutting believe it or not. I learned hydroponic cloning from the MJ industry from user websites. Many have low success rate in cloning as they don't understand the science of hydroponics, bacteria, water temp. etc. I have formulated my own successful cloning solution and procedure that is regularly 100% successful. I hold my knowledge to myself. You would be shocked at how many people didn't pay attention high school science class and have zero success in cloning - lots of failure rate on user websites along with frustration and everyone has a theory too.