So since last feed was at 3/4 I thought to give her the full dose. Found the temperature was dropping below 10 on a night so I bought a fan heater to go under the plant and circulate greenhouse.
After the first day of 28/27 degree heat some of the fan leaves started to change colour and dry up which I got advice on and found this is normal when coming to the end of your cycle also found I had spider mites
Found some of them and removed also sprayed plant down and flushed