Interesting development.....I've realised the lights have been on 24/7 since day 1, the timer was on 12/12 after the last grow and I've re set it wrong and didn't press the 4 hrs in lol stoner moment......what's very very encorouging is there are zero deficiencies with either schedule,even on the last grows I realised the lights were easier on the plans as my Calmag def which I previously had on almost every plant stopped,I don't even use a Calmag sup anymore when I used to add it to every feed. I'm also very encouraged by the speed of the growth from all 4,I've now removed the timer completely lol.