First grow in a decade

These girls have grown great under the 600w HPS but I have a 600w Metal Halide getting delivered today after a delay with the shipment. I've only watered these with plain tap water left for 24 hours this week. I repotted 2 of the Critical Mass but they wasn't root bound so lesson learned I'm just glad they seemed to have coped well. I think maybe the seedlings in the smaller pots are starting to have a bit of nitrogen deficiency so I've made up 5litres of water and added 20ml of Canna Terra Vega and will water the smaller pots with it once they have drank yesterday's water. I will use plain water on the 2 repotted CMs due to them being potted into approx 20 litres of Biobizz Light Mix and around 5 litre of perlite. Not sure if I've added all the pictures, fingers crosser I will get better as the weeks pass 😂 Any help would be greatly appreciated as I'm a bit rusty 😊