So i plan on growing some indoor PPP feminized seeds from nirvana, i was goining to purchase one of thoes grow tents and the kit that comes with teh 400 watt hps and hm lights.... when doing this indoor is there a noticible spike in the electricity coaust? that would make the electric company suspect anything.. and how much do u think the bill would be a month while using it
Very important! get a switchable ballast, Irecomend Lumatek digital $169. That way for the price of a $20 bulb you can use MH in veg.
Now to your question.
Power bill are charged per kilowatt hours.
1 Kilowatt hour is 1000w running for 1 hour.
So if you had a 100 watt lightbulb it would take 10 hours for one kilowatt hour.
Most of the country is on a sliding scale for rates meaning they charge you extra for going over your baseline. So best case you are charged 10 cents per killowatt hour wort case .30 cents so
400w 18 hours a day is 7.2 Kilowatt hours or between .72 cents and $2.16 per day x 30 =$21.60-$64.80 per month Plus every thing else in your home
