LOL get that foil OUT!!!! u cant use tin foil ur gonna have Fryed bud LOL. look dude, just paint the walls around it white, or buy Myler, can be got from www.growell.co.uk look under accessorys and myler, its SPECIAL reflective sheet, you see foil deflects heat, and makes hot spot and it will for sure burn ur plant alive. the lights im guessing the £5:99 spot lights 500 Watts from B&Q? they get VERY hot. make sure u dont make a fire burn ur house down dude. u can buy lights from that site i posted too. in fact they sell from feed to carbon filters to worm castings to hydros hell is there anything on that site they dont sell? apart from seeds. i got many things from them i live UK and they deliver within like 2 days!