Auto night queen

Right so this is where I’m currently up too, 11 weeks all together and flower for around 4/5 weeks. Nute wise I’ve been using Dutch pro a+b bloom (20ml) and old times organic (10ml) and 2 days ago started using a bloom booster... So last night I had noticed one plant foxtailing... see in week 11 pics? last week I also had a few day where temps got to low 30c but I soon sorted that out with temps now at 25 high and 16lows... Question is, was it the booster or heat or both? The plant looks so happy so I’m suck I need help 😂😂. Any advise is welcome. Ps these girls are massive, ain’t to sure how I’ve managed it, 3 plants are over 170cm and the others are 150/160cm bushes