not sure what 40c is but i run at times 100 degress indoors but i have plenty of air flow and fresh air.hello.id like to ask why temperature cant be over 30 c indoor while outdoor the plant can survive even in higher temperatures?for example i live in the mediteranean and weed can survive even in 40 c.
this is why i always say you HAVE to HAVE PLENTY of AIR flow and FREASH iar also is way better.here is your reason y...
indoors with the temperature above 30 c will create stagnant air that surrounds your plant. this air can and most likely will create mold on your buds. outdoors, even when the temps are alot higher you have to remember that the outside is not an enclosed area and the air that surrounds the plant is free and able to move around alot better... i hope that helps
if you saw my video i have mine under the light but at plant hight.i have another question just dont want make a new thread.where do i measure temp and humidity?i heard not under the lamp but in the height of the plants.somebody said that must be shadow there.