Need help identifying deficiency

[Smokerontheroof]

Hi all can anyone help me identify whats up with these plants?

Heres the stats:

Bio bizz light mix (40%) and clay pebbles (60%)

Under a 40w led spotlight

Temps are good as light doesn't get too hot

Using bio nova soil supermix at half dose

Vitalink calmag at 1ml/litre as I always do

I dont ph my water when in soil and ive never had a problem before

I'm doing everything I usually do and ive never had a problem that's why I'm so confused about this one.. i have 4 that are 2 weeks away from chop on the same nutes just higher dose and they are looking amazing.. really stumped here so any help would be deeply appreciated guys!! Cheers!

EDIT: Sorry really stoned while trying to write this..

Forgot to metion its the burning round the edges im concerned about, the plants were topped a few days ago and medium is left to dry before watering again (approx 3-4 days just now)

I know the plants look shitty in general but that's not my concern its that golden burning around all the leaves its definitely a deficiency of some kind that needs sorted, thanks for reading this hopefully it wasn't as hard fpr.ylu to read as it was for me to write! Cheers!

[RASTA]

Possibly a calcium excess. I've saw leaf edges burn like that giving too much calcium.

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[RASTA]

The one in the circle pot actually looks mag deficient though

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