She is in pre-flowering stage and she is looking really happy in the megapot.
So far the watering regime is as follows:
•Clean water in the tray for 4 days, top up if needed
•Turn off the air pump, drain the water
•Wait 12 hours
•Pour the feed in the tray (3 liters - 1/2 strenghth)
•Leave the feed in the tray for 24 hours, air pump off
•Drain the leftover of feed
•Clean water in the tray, turn the air pump back on
This is quite a lot of work compared to using synthetic nutrients, but I hope the hard work will pay off at the end.