Water bladder thing, how to clean?

[petri oosthuizen]

As above
I bought a tankbag with a built in water bladder thing
1) How to clean, hot water only I'm thinking?
2) Can I put something like, say, Energade in there, or will it discolor the bag and/or will I have hassles with removing the "taste", etc?

Thanks

En ja ek GAAN waarskynlik ook eendag Jack Daniel's daar inmoer, incase iemand wonder

 

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