Ok this is my 3rd grow, i did well with the cfl rig and now its time to move on to HPS.

The room
I have constructed a 8.5 x 8.5 attic room, fully heat & light sealed made from 50 mil silver foam insulation boards.

The contents
2 x Intake fans
1 x Extractor fan
1 x 600w HPS
2 x Oscillating fans
1 x Delonghi oil Heater
4 x Timers
1 x Digital thermometer and humidity gauge
2 x CCTV cameras

The ventilation system
The room has a 600 watt HPS cooled via 2 intake fans blowing cold air down each side of the bulb and on the other side it has ducting to the exaust fan pulling the heat away from the bulb, plus 2 oscillating fans. The exaust fan is fitted directly into the house chimney so heat signatures should not be a problem.

The ventilation system is keeping the room at about 70 at the moment and i also have a delonghi oil heater on a timer to heat up the room when the lights are out

Im contemplating buying a portable air con unit to keep the temps down if needed

There is also 2 cctv cameras fitted in the room, one on the plants and the other on the digital thermometer all conected to my TV

The plants
I successfully germintaed 10 AK47, 9 will grow in this new room and the other im going to grow in my old cfl room for comparison, at some point my cfl rig and room will become my veg chamber. Anyway they are planted in Biobiz soil and 5 broke through today!

I would say i have spent about £600 in total from the silver boards to the seeds, all i have left to buy is the nutes.

I think i have covered everything..

-------PICTURES TO COME-------