When reading though the beginners forum, the number one problem I keep seeing is new growers starting seeds and clones in peat pots and pellets, otherwise known at jiffy pots. DON'T USE THESE!!!! They are the wrong ph for MJ and can cause yellowing, wilting, nute lockout etc in your precious plants. Many growers confuse peat pellets with rapid rooters. They aren't the same. Rapid rooters are ideal for starting MJ. Peat basses products are too acidic. It's fine to have peat mixed into soil, but peat pots and peat pellets are a BAD thing.