Calculating energy costs

[edit24k]

I had a guide once but lost it, which helped you calculate predicted energy costs for powering hps light over a period, anyone able to assist?

edit24k Reviewed by edit24k on 06-21-2009. Calculating energy costs I had a guide once but lost it, which helped you calculate predicted energy costs for powering hps light over a period, anyone able to assist? Rating: 5