So I've exclusively used TM Pro Reef salt in my tank. I'm not much for change either. However BRS sent me a gift. With my order of TM Pro, they sent me a 20kg box of HW marine mix reefer salt. Wiegandt. I know nothing about this salt, but will check what the numbers work out too. Any one with experience with these salts and if it is wise to use it or find a reefer in need and donate it? I love TM Pro and don't know if there would be any ill effect