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also fresh water from a river is not enough. If the water come directly from the top,, it doesn't have enough time to get all the minerals. Is good water but is not giving you all you need. But I always use a filter if I drink from a river or a creek.
10 sats \ 1 reply \ @Natalia 4 Aug
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what filter do you use?
something like this, very efficient, light and cheap.
I use stainless steel light bottles No plastic.
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