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OfflineSloppy
Be Positive


Registered: 06/27/16
Posts: 107
Last seen: 7 years, 11 months
Re: growing one plant question (NOT an autoflower) [Re: cannabispatient]
    #816197 - 07/01/16 01:50 PM (8 years, 7 months ago)

Why did you make another thread....

Quote:

Sloppy said:
Watts are the rate of electricity being consumed by the unit, directly related to KWH.

A 200W CFL uses .2 kilowatt hours when it's in use. Produces 10,000 lumens as per that manufacturers advert. 150W HID uses .15KWH, produces 15,000 lumens. For example, if you are running a 12/12 cycle for a 30 day month:

360 hours per light @ 18 cents per KWH from your electric provider

CFL: 360 hours x .2 KWH x $.18 = $12.96 @ 10,000 lumens

HID: 360 hours x .15 KWH x $.18 = $9.72 @ 15,000 lumens

So the HID produces 50% more lumens, while being 75% of the cost of the CFL in terms of energy. Plus the point that was just made about it creating extra heat with the internal ballast, etc.




Your 200watt CFL does not have a 400W output. That's not possible.


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OfflineSloppy
Be Positive


Registered: 06/27/16
Posts: 107
Last seen: 7 years, 11 months
Re: growing one plant question (NOT an autoflower) [Re: cannabispatient]
    #816200 - 07/01/16 02:17 PM (8 years, 7 months ago)

Yeah, I'll write them a letter. :hehehe:

I'm just giving you basic electrical physics calculations. I'm by no means an expert, but if a 200W cfl puts out 10,000 lumens thats HALF as many lumens output as 200W HID equivalent. So, they must be pulling some gypsy magic to have that make any sense...


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OfflineSloppy
Be Positive


Registered: 06/27/16
Posts: 107
Last seen: 7 years, 11 months
Re: growing one plant question (NOT an autoflower) [Re: Stoneth]
    #816245 - 07/02/16 05:02 AM (8 years, 7 months ago)

Quote:

Stoneth said:
Quote:

So three of these small, cheap and environmentally-friendly CFL bulbs would have a combined output of 30,000 lumens. That easily rivals what an hps or metal halide can do.



Three of those would do 30000lums indeed no doubt at 600 wwatts used.
One 400 HPS can do as much as 55000 lums depending on choice of bulb.:smirk:
In case you didn't catch that at 200 watt less one could have 25000 more lums.
Not to mention two less bulbs.




That's all I was trying to lay out for you, OP.

I wasn't "insisting" a CFL can't put out 10,000 lumens. That's totally reasonable. But don't be under the impression you are saving energy, or nothing. You are going for the cheaper, easier alternative, which you will have to pay more for in electricity and be more on top of ventilation because of direct heat near your plants.


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