Cost of 600w HPS in AZ??

Are you on a basic plan, a time of use plan? Is the ballast set up to run under 110V or 220 V? Under the SRP basic plan, with a 110v ballast, you will be paying around 36.28 dollars every 30 days at 18/6. You can throw all that math out the window if you are using a different plan or a 220v Ballast (half the price to run it under a 220V ballast)

The real killer here is , how much air are you exhausting out? If you are exhausting 200 - 400 CFM of air out of your house, in turn your central a/c will have to work extra to cool down that extra influx of air in your house. An 1800 Sq. Ft House will have all the air in the house replaced one or two times per hour depending on the size of your exhaust fan, leading to your central a/c cooling down the replaced air and working longer.

Damn i got 101 views and not 1 guess.....it says it is 50 cents an hour kwh, im runnin ac 80% of the day 2 degrees cooler then usual, the 600w hps 3 fans two normal and 1 outfan. it is 5 cents per kwh during off peak, right now june-august they have this bull shit 3-6 pm it is super peak fuck u aps and ur super peak. that is a big difference 5 c to 50, for all u az growers i got a website u should reall look at http://www.aps.com/main/services/res...es_29.html#ta7 , i think u will be surprised i was. Also last night was my first night switching to 18/6, i did it from 10pm to 4am, i HAVE toswitch my lighting so its off from noon till 6 what is this gonna do to my plants. they have been on 24 til yesterday did 1 night of 18/6....please help

my house is 1900 sq ft but it is in an inclosed closet i have my ac vent in the bedroom t ducted to it and the bedroom end blocked off like i said the ac runs about 80% of the day have it set at 77

I can do the math for u all day long... But I really need this info :

Hours per day running light on peak, as well as off peak.

How many cfm is your exhaust fan.?

What was your ac bill last summer without any lights running?

June - August billing cycles	Cents per kWh
On-peak kWh used (Mon. - Fri., noon - 3 p.m. and 6 p.m. - 7 p.m.)	$0.24445
Super-peak kWh used (Mon. - Fri. , 3 p.m. - 6 p.m.)	$0.49445
Off-peak kWh used (Mon. - Fri., 7 p.m.- noon and all day Sat. & Sun., 6 holidays)	$0.05254

Bill last year between june threw july was 290-440 it topped tryin to find cfm for fan had a old grow buddy install his shit so not to sure i will get back to u hope this can help u give me an estimate, also they have been on 24hrs for the last 10 days, now 18-6 hope this info helps and thank u

Because your plants are vegging...strict lighting schedule isn't necessary like it is for the flowering phase. So switching them to the times that are best for you won't be that difficult. I have my veg lights on at 7 p.m. and off at 1 p.m. My flower lights start at 7 p.m. and are off by 7 a.m.

fan is a 440