Hi, I am having trouble with getting my mosses (weeping & java) to root. I seem to recall reading somewhere on here (or did I dream it? ) that mosses aren't all that keen on very hard water. It is tied to lava rock so it shouldn't be to difficult but after 2 months it's still constantly floating to the surface and bunging up the filter intake . Itook one of the smaller rocks out last weekend to see what had actually attached and it was one lonely strand! Am I just being impatient?