Low_rdr, I'm a little confused... I said give a little nutes. You say that you advise against it, then in your next post you say that's not what you're saying and for Token to give 1/4 strength nutes. You also say that perlite is to allow into the soil. Perlite hold moisture, not air. Have you ever squeezed a piece of perlite? It's like a little sponge. Also, can you explain this: "in the FFOF with the coco/perlite that's fine, just keep it under 40% (or to taste) but I'd keep it under 40." Why do you say this? What about those that grow in 100% FF potting soil? Are they making a mistake? Exactly what is Token suppose to use to make up the other 60%?