Blue Dream - Aussie Canna

I am now seeing how hard I can push these girls. My EC is just over 2 though to counter this every third fertigation is very light, around 0.6-0.7 to try and mitigate the nute burn. I did miss two water only or light feedings due to my hectic schedule. So I believe I'm in for some burn 🔥 I can see come of the leaves curling though I think it might be too late. Due to the dense plants and the fact that I'm greedy I have now purchased another 400w detachable 6 bar led which will be set up on the four corners and probably throw the two spare underneith. . . . Why because I have them. CO2 bags are in and I am recircing the air during the lights on period with the room. I do have fresh air coming in as well though. The photos are the end of week 3