Hi there, so this is the result, i found this material , 3º pic
http://www.boltherm.pt/PT_termico.asp i think that i can use this insted of aluminiom foil
before i had 54 watts and now , i bought a 35 spiral cfl and switched the bulb 15w , so now i have 74 watts. If cfl have +/- 65 lumens/watt now i have +/- 4800 lumens i think.
About the pot, im dont want to change it, because i have a tinny space , and i read somewhere that the smaller the pot is , smaller the plant will be, so i'm doing that.
thank you all, appreciated