good grow wardrobe yr yellowing looked like ph probs.
deficiencies are rare when using a good nutrient. ph fluctuations lock out elements and make them unavailable to plants even though they are present in adequate quantities. flush em with ph adjusted water and watch yr ph going in? they look good though

1000w light covers 3m square at 80cm above the canopy.
i would put 4x 300mm pots of coco coir and grow them to a 30cm bush then turn them. but uze all like millions of plants. in australia if we get busted it goes on numbers so the fewer the better.
we can put 1x 510mm pot of cococoir under a 1000w and grow to 1m bush, turn and end up with 3lb and only get a slap on the wrist for wasting the courts time.