Well.. what u can do is run to the hardware store and pick up a couple cpf (compact florecent) and thier only baout like 3 or 4 bucks for 1. Down her thier 8 bucks for 3 27 watts. each plant is gonna need like 100 watts for good buds. also if u wanna get a long floro they range in price and wattage. So if u go to the hardware store look around thier really cheap idk if u have a walmart in london but go thier there even cheaper. If u wanna send me an email i can show u pics of mine and what they look like. My email is [email protected]