C cheese'head Active Member Mar 4, 2008 #1 how much will it cost me to run a 400 hps for a week or month on18/6? in pounds sterling please ££££.
how much will it cost me to run a 400 hps for a week or month on18/6? in pounds sterling please ££££.
J jphamac Active Member Mar 4, 2008 #2 it cost me an extra $16 USD a month. Not sure about the pound conversion.
mstrymxer Well-Known Member Mar 4, 2008 #3 watts x hours divided by 1000 this will give you kilowatt hours. multiply that number by your electricity rate and that how much it costs per day.
watts x hours divided by 1000 this will give you kilowatt hours. multiply that number by your electricity rate and that how much it costs per day.
