Outdoors when there's sun + indoors under LED house lights 18/6 cycle. Showing pistils (since day 26) and is now being kept outdoors permanently on natural cycle (currently 11h daylight).
PH set to 6.5 when changing water and adding nutrients (weekly) but drops down to around 5.5 on its own within a couple of days.
Moved into new bucket with secure lid today. Water volume 12 litres in circulation.