I saw a piece of carved rainbow rock today - golden brown colour with white layers through it. The texture seems a bit loose, as I ended up with golden powder on my hand when I picked it up.
Question is - will this do anything chemically to my water, if I get it?
Someone told me it might raise the hardness and my local water is fairly soft with fish to suit.
Question is - will this do anything chemically to my water, if I get it?
