How much do Grow Lights cost to run?

[BigJer]

Been checking out feminized seeds as my present garden, one strain had 8 of 9 turn out to be male. First time in over 9 years of indoor growing that has happened.

That happened to me last year and one was a Herm and got to 3 of my plants out of 8 and I found it pretty quick. This year I went to a well known seed store all fems and if you germinate them per their instructions, they are guaranteed to or they will replace them.

 

[Buzzy]

I'm running an HLG 550 V2 Rspec, this draws 480 watts...........If its cool enough in my tent interior I add the Timber 2 VL for another 200 watts during mid to late flower......We have NOT noticed much of a spike in the utility bill at all. $25 or less extra a month.