I only have a liquid test kit for my ph. I will check my res ph next watering... my intake fan is only a Axial Fan 4" 105CFM
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one of my oscilating fans is attached close to the top of the tent pointing towards the light and the top exhaust hole. the other one is pointing on the plants.

now in my flower room I have a air cooled reflector with a 6" vortex 449 CFM exhaust with no intake and one oscilating fan.

but the portable air conditioner is there in front of the two tents ... hrm
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