ok so i tested the 400w sodium (S) and led'd (L) with the growbox door open (OD) and closed (CD). all measurements where taken by a DHT 22 at a distance of 21 cm from the S bulb and 26cm from the L.
here are the measurements.
humidity / temperature / door state / S & or L
50% 30°C OD NEITHER
30% 44°C CD S
50% 36°C OD S
50% 36.7°C OD S & L
27.6% 49.5°C CD S & L
So... what do you think i should do? i could buy a bathroom air extractor although i dont think it will be powerfull enough, what do you think?