He was using a different blend before and was following the feeding chart from them and it was every second water to feed. I think he's been over feeding cause we've had issues with stuff not flushing properly. Also the other line of nutes he was using was really high in nitrogen, like double what the Advanced Nutrients is, which I think was causing problems as well. We've only just switched to the AN line, and so it's a whole new ballgame.

We'll cut down the feedings to once a week with good watering in between and go from there I've sold him on the "less is more" mentality so we're stripping it right back to basics and the minimal we need to give the plants what they need and will add/subtract/adjust from there! Thankfully we've got lots of clones to work with from this sweet tooth so we can tweak as needed and if we lose a few in the learning process it's all ok!

Thanks for all the advice