I replace my soil and purchase new plant food every 2.5 months. My bulb i replace one a year and i replace my ballast every 5 years. I have a 75$ per month electric bill which prouduces 2 lbs of cannabis every 2.5 months.
The total cost of my 2 lbs every 2.5 months is around 225$
Not bad.

dai*ma:dance: