Make sure you are using a good LFS. Mosser lee is not the way to go.
I did an experiment with it, I was over at my grandpas house and he had a bag of it. I took some out, put it in a zip-lock bag, then misted it a few times. After a week of it being closed up in my room in a sunny window-sill, the amount of mold/fungus on the top layer of the LFS was ridiculous.
I highly advise to use a different brand. Mosser lee is mostly just sticks and grass anyways.