im using canna a + b , cannazym , canna boost wen flowering, using the canna grow feed chart ther in week 4 of veg now, dont knw wat temp the are or humidity and ive no tester for ph or ppm, the cuboard im using is 3ft x 3ft and 10 -12 ft high ive got an extractr which u can see in the pic theres a 5" x5" hole in the bottem left and top right wher the fan is, i put my hand at the top of the plant and it doesnt burn, this is my 1st time at it and i am on a low budget any advice would be a massive help ppl