I am on day 3 and instructions state "top up 4.54 litres tepid water". Does this mean top up TO 4.54 litres? Should I leave space in the demijohn and how much space? It's still got 7 to 20 days to ferment yet! Terrible instructions as very vague and badly worded.
I did that and it bubbled up into the airlock! I had to take some liquid out again! Maybe I've just got a lively must going!
I've topped it up again now and it's still quite lively! Thanks for the advice!