2 X 240w QBs.
The plants are Green crack auto's and the height difference was 50cm to 120cm.
I used one light till the last week's of flower.
I use a lux meter to help with lamp height and intensity.
The numbers you go for are..
Seedlings 5000 to 7000lux
Veg 15000 to 50000lux
Flower 45000 to 65000lux.
I bought a proper meter for £25 but you can get a phone app.
The diary is on here TT fast lap.
It was a real learning curve as I hadn't a clue
![](https://emoji.tapatalk-cdn.com/emoji16.png)
I found having 2 lights helped with the difference in plant height.
![Image](http://uploads.tapatalk-cdn.com/20201101/eb9a4f41d74dbdd471c57cc515041101.jpg)
![Image](http://uploads.tapatalk-cdn.com/20201101/247b7f7f99582de3125125b330bf6e2a.jpg)
![Image](http://uploads.tapatalk-cdn.com/20201101/dccc866c86a6db109d3a568dfb784069.jpg)
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