I have been to many LFS's and diff people have told me diff things. I feed my stingrays everyday and my Retic's have only grow 1" since I have had them (1 yr). I was told this is enough to jsut feed once a day, but the other day when I went to get one of my new stingrays he told me to feed them 3 times a day! Is that right? How often should I be feeding them?