That's mad over here in the U.K. You can grab your self 600 HPS cool tube reflector ballast ducting and fan for what would be 70$
I can see why air con is so appealing
Let me know how it works out
I have struggled with my temps I have a heavily insulated loft and my first grow was a nightmare to maintain the temp
I removed the light ballast from the room brought a 5" cool tube and fan to match
I added a 4" inlet fan to one end then a 4" outlet fan the other end so to create like a wind...
I have same problem my rooms 2.5m wide and less than a meter deep I have managed this time to fill the area with one lovely canopy it was a right pain in the butt but its worth the aggro
I personally don't touch the plants until you see small flowers appear towards the base of the plant then plant by plant I strip all bud and leave of the bottom third of the plant (or where the lights not getting to).
then drill holes in the top of the container and tie all stems down so to...
just picked up on this thread and read my self through, curious to know how mine are doing in comparison to others. It appears mine look the best out the lot their 4 and half weeks in and would appear to have a ridiculous amount of bud. If other members would like to see photos and set up just ask.