I use it too. Helps with clone survival for sure. I don't even know what is in it for sure. 3 ml per gallon goes in my tank every res change. I've used in on tomatoes outside with good results also. Helps the taste of the tomotoes and if that was all it was good for that would be enough. I supect it's enzmes and little sugar (keeps the enzymes vibrant so they can help). My grandpa used it over 40 years ago and swore by it. Next grow I'm using it in a foliar spray for the young ones. You're into the can't hurt part of your grow!