Browsed around for a while and was wondering how long can soil sit? If I mix my soil and place it in a 5 gal bucket, wrap the top (no bugs borrwoing in), and let it sit for my next grow will it still be efficient when the grow has to start. I wanted to wrap the top to prevent bugs from borrowing in but Im afraid I might get a little bit of mold considering the humidity (it will be cold in my basement though)...