Heat stress triggering various excess and deficiencies for leaves right under the bulb but not for leaves along tent's border

I finally opted for: - Reflector XTRA-COOL V2 125MM glass ventilated type cooltube - PLATINIUM Nutrients - Box of 60 CO2 TABS tablets as first solutions to deal with heatstress, but cool tube was a real waste of money only improved heat issue from 1° to 2°C wich is not enough so few week later finally invested in some SpiderFarmer SF2000 200W to replace the HPS wich solved my issue with heat. Temperature with led tent closed is lower than temperature with hps tent open and the temperature rise drastically with hps tent closed.