How does moss grow in bottled drinking water?

If the water or the bottle, had not been sterilized (not sterile, just … funny-haha.co.uk - Joke: Three Samurai), then there are viable organisms in the water. If the water is not ultrapure / deionized / distilled), then there is some hardness which can act as food for growth. read more

Bottled water can and does provide nutrients and support microbial growth, including algae. One important reason for this is that, strictly speaking, the Regulations on the bottling of natural waters do not permit sterilization, although it is not unknown for bottlers to install in-line ozone generating machines to sterilize the water during bottling. read more

Bringing mosses in for a visit is a better over-all approach to indoor moss gardening than attempting a long term stabile artificial ecosystem. As for the water source, rainwater is superior to distilled, a better type of bottled water is one filtered by reverse osmosis, which removes chemicals but not trace elements. read more