Well she has definitely recovered, the frost is starting to appear....
Day 64 - Tuesday 18/12/18 - Added 3 litres of water, 6ml A+B - ph is stable.
Day 65 - Wednesday - changed reservoir for fresh solution
Day 66 - Thursday - added 1 litre of water , smells lovely
Day 67 - Friday - added 2 litres of water and 6 ml A+B
Day 68 - Saturday- added 2 litres of water and 6 ml A+B
Day 69 - Sunday - added 2 litres of water and 6 ml A+B
Day 70 - Monday - added 2.5 litres of water and 2 ml A+B
Looks very frosty ,smell s very strong lemon