


I would I like to get the hard water stain out off my fish bowl. I always change the water but can not get the water stain out. I've use sugar,viniger salt to get it out. But it's still there. I know not to use soap cause it can kill the fish. Something I can use that's at home. How bout some advice. If you don't know the answer please don't answer. But if you do please fell free to leave me some advice. May god bless you.