Well damn $400…who paying that round here…you must be South America
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Big place, kids & wife always home (Covid-life) running up the bill. 
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I don’t actually pay electricity where I am but you can use this guideline to calculate what it is costing:
Tech Specs
How much power does the Grobo use?/What is the power requirement of a Grobo?
Rough estimates has the unit using about 1.4kWh per day to operate.
So if you pay $0.13/kWh the grobo will cost approximately 30 x 0.13 = $3.90
The power adapter for the grobo only uses a little over 1 amp if I recall correctly, so it uses a touch more electricity than a 100W light bulb would.
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Your first grow? If it’s only been 3-4 days how did your electricity bill go up $100 from the grobo? Sounds like a electrical party somewhere else in your abode
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Lol im not just trying to figure it out
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2 units that’s alright! What I got in them as we speak!
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*what u got in them?
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My wife asked me the same “why is the electrical bill so high this
month? Is it the grobo?” So
I brought her outside and showed her the air conditioner and the 240 volt wire.
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How much was it mine was 95 and it wasn’t even on a full day
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The cost varies depending on where you reside, depends how much you pay for kW of electricity. I’m in Canada, it has been an additional 5.56$ for the first month. I used a smart plug. I think there’s one in the post somewhere, that would be you’re best way to gauge consumption.
Cheers
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My bill was 120$ this month as opposed to 90$ but that’s due to a/c and covid as well, everyone is home.
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White Widow, Northern Lights - Both a couple days in grow, so not much to show. From Canuk Seeds
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