ya, i'm with stinky. I dont like the peat pellets I have had very bad results trying to seed in them. Also peat is very acidic so thats not best for cannabis.

I use these "jiffy pots" they are made out of thick paper and you put your own soil in. And once they are big enough for transplant you just stick the whole pot in soil and the roots grow through it.
they're pretty good.