Originally Posted By: 2Dogs
Trophy rocks are expensive for what ya get IMO. The salt is what is the drawing card. I've used a mix of 2 parts loose red trace mineral to 1 part di-cal phosphate for years. It works very good, has some mineral value and is cost effective. I get more pics than I care to delete with that recipe also.
I also use this and it better than any rock, crush, ect.