I think you're trying to do to much, too fast. I would suggest working on your salt formula before worrying about redipes. You haven't decided which salt to use yest let alone granula size. There is no secret about salt. There are more threads on salt than carter has pills. READ, READ, READ and then read some more and use the search Engine. I did it and so did everyone else here. Slow down and learn the properties of the plastic, salt, etc. you are using and keep your variable to a mnimum.