Stinky do you think i'll need to ph my soil after every watering from now on? and should i ph test each individual pot or will a result for one reflect the rest?

I suppose it'd be pointless me asking if so many times exhausting would be ok until i told you how big the room is, i'll post a diagram with sizes tomorrow if its ok, i think the fan being on often will cause my temps to drop too low, as its a shed and outside is nippy!

With the new fan and vents, the temp was 24 degrees Celcius on average after the first time the fan was on before hand it was about 30 C. I woulnt be able to add a heater to the room, hopefully when the flower rooms lights are on the temps will fall to a better level maybe