A couple of comments and questions. Billcollector, I see you use felt pots, what do ya' think of them? At this point I won't grow in anything other than a felt pot. Some mycorrhizae and rhizotonic added to your soil and the root system they produce in those pots are fantastic. My last grow the roots grew right through the bottom of the pot, didn't know it until I chopped.
Temps. Anything over eighty and the stomata on your plants start to close and this slows down growth. Anything dropping into the fifties does the same thing. Imagine you're working outside and it's either too hot or too cold, are you at your maximum performance?
And lastly for those in the states, look into vortex fans. They are a bit more expensive than other fans but are much quieter, use less energy and the motors are balanced which is important if you use a speed controller. I have two six inch fans and only one is a vortex which I use as a scrubber. On full blast it's much quieter than my other fan even with the one end open to exhaust the scrubbed air back into my room.