The beginning of the week started badly. Spots on the lower leaves! I received great feedback from this website right away then a couple of days later from my grow shop.
Question was, was it nute burn or under feeding. Either way, a lot of water was the answer. I believe it was under watering!
Once the girls recovered, I continued with more frequent, higher volumes of watering with Kalong Grow added at half dosage.
Throughout the week, I continued to tie the plants down in the 3, 6, 9 & 12 o'clock positions. Changing the position every second day.
Additionally, I moved the girls position within the cupboard in a clockwise rotation every day. (Couldn't hurt so why not)
The fat bananas are ranging in height from 13-19cms and by Wednesday had obvious flower sites.
The northern light has no flower sites and is only 11cms tall. It's also extremely dense with even, consistent foliage. I stopped LST as it seemed ineffective/impractical.
By the end of the week the 'spot' issue was completely resolved.
On 27th I used a PH testing kit on the bottled water I had been using. Turns out it's overly alkaline. The tap water was 6.2 so I switched to tap water. I realise the chlorine etc is not good and have ordered a water filter to remove chlorine, lead, etc, etc.
I feel flowering is going to happen within 10 days or so...