A
Anonymous
Guest
I've recently switched over to Reef Crystals and have noticed that in the mixing barrel, I get what looks to be a calcium buildup? Only it's not white like I get on the sump equipment. It's more like a very soft/pale orange in color when it's wet, when dry it's light beige/brown. It wipes off the sides of the barrel fairly easy, but is a pain in the butt to get off the mixing pump. It's really strange, because my friend is also experiencing the same with hers. Any one have any clue to what this stuff is?