Just a few pics to show the growth in the last week. The new growth tips are looking good, I've had to tie a couple of them down while others catch up. The yellowing's spreading on a couple of the plants, I think it's a combination of the light not getting to the bottom leaves and me needing to up the nutes (gonna try 2 ml per litre next feed) . I was gonna do a light flush tomorrow, I like to do them roughly every 4 weeks to try and prevent lock outs.

Anyone agree or disagree with my diagnosis? Any comments/advice would be appreciated.