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Offlineblazinmike
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Registered: 09/08/09
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how many plants can i grow in a 3x3 space?
    #297309 - 10/14/09 09:53 PM (7 years, 1 month ago)

how many watts light would i need for that?


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Offlinemeatcakeman
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Re: how many plants can i grow in a 3x3 space? [Re: blazinmike]
    #297325 - 10/14/09 10:13 PM (7 years, 1 month ago)

You can grow anywhere from 1-4 plants depending on your method of growing.


I'd go 150 w hps. But then you'd need ample ventilation.


I've seen decent yields come out of grow areas smaller than 3x3x3; a couple ounces (~2 oz., I don't really remember).


You could use CFL's, too, if you're growing on a budget. They are less wattage, but Magash can tell you how much he hates them. :lol:


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Offlineblazinmike
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Re: how many plants can i grow in a 3x3 space? [Re: meatcakeman]
    #297326 - 10/14/09 10:16 PM (7 years, 1 month ago)

well what do you guys think im thinking 3x3 or 4x4 but im new to lights and im trying to stay on a very tight budget what would be the cheapest lamp for me to use i mean i dont want to raise my electric bill more than an extra 10 a month im using soil


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Offlinemeatcakeman
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Re: how many plants can i grow in a 3x3 space? [Re: blazinmike]
    #297404 - 10/15/09 01:03 AM (7 years, 1 month ago)

It's really on you.


With HID, you get tight, compact buds that are sure to please.


With CFL's, you can still get nice nugs, but you have to know what you're doing.


Also, HID comes with extra baggage: higher temps, higher expenses. Thus, you'd need to invest more money in your grow for proper ventilation and lighting.


CFL's are relatively easy to set up. They don't create too much heat and they aren't expensive.


You could go CFL, and then step it up to HID (hps/mh).

It's all up to you and how you want your grow to be.


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Offlinetrichome
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Re: how many plants can i grow in a 3x3 space? [Re: blazinmike]
    #297415 - 10/15/09 01:29 AM (7 years, 1 month ago)

go 4x4 with a 400w hps.  use compact fluorescents for seedling and early veg.  a moderate investment in equipment pays for itself many times over come harvest time.


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OfflineEro42oH2o
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Re: how many plants can i grow in a 3x3 space? [Re: trichome]
    #297461 - 10/15/09 02:38 AM (7 years, 1 month ago)

What is your goal? Start to finish in this space? Or vegging? Or flowering? Or cloning? The Amount of light necessary and the lighting that can be used varies some for these variations. And  also 10$ a month might be an understatement if you wanna light that 3x3 up optimally.


Edited by Ero42oH2o (10/15/09 02:43 AM)


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Offlineblazinmike
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Re: how many plants can i grow in a 3x3 space? [Re: Ero42oH2o]
    #297762 - 10/15/09 05:43 PM (7 years, 1 month ago)

im just looking to pull about 3 to 4 0z per harvest enough for my head in between if i had a 400 watt hps in a 4x4x6 room could i get that many?
a how much would i be looking at as an increase in my electric bill?


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Invisiblecoda


Registered: 04/20/08
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Re: how many plants can i grow in a 3x3 space? [Re: blazinmike]
    #297816 - 10/15/09 06:45 PM (7 years, 1 month ago)

Quote:

go 4x4 with a 400w hps.




a 4x4 room would be best when outfitted with a 600 watt light.  400 watt HPS would work better in a 3x3 or smaller area.


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Offlineblazinmike
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Re: how many plants can i grow in a 3x3 space? [Re: coda]
    #297879 - 10/15/09 07:59 PM (7 years, 1 month ago)

how much can i expect my electric bill to go up with a 600 watt light?


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Offline114425
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Re: how many plants can i grow in a 3x3 space? [Re: blazinmike]
    #297886 - 10/15/09 08:25 PM (7 years, 1 month ago)

get a 4x4 tray and 1000w hps. 16 plants, 1 per square foot. works good for me.


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Invisibleagmotes165
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Registered: 08/12/08
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Re: how many plants can i grow in a 3x3 space? [Re: 114425]
    #299003 - 10/17/09 12:34 PM (7 years, 1 month ago)

look up you local electricity rates:

For a 600W light assuming 18/6 veg and 12/12 flower photoperiod:

for veg: rate*334.8 per month for a 31 day month

for flower: rate*223.2 per month for 31 day month


Note: units for the rate should be in $/kilowatt hour
      Kilowatt hour will be abbreviated Kwh
      rate should be somewhere around .10-.20 $/kilowatt hour in the US

also...most HPS lamps run at a luminous efficiency of about 100 lumens/watt

and at 555nm average, a watt of 555nm visible light is equal to 683 lumens

so for a 600W light, running at 100 lumens/watt, only 88W of that are going to visible light...and only 30% max of that is absorbed by the plant and stored as chemical energy, the rest bounces around and is eventually converted to heat, as is the remaining 512W being used by the light. So when you are thinking about ventilation and cooling of this grow space, if you are using a 600W HPS, make sure you have enough ventilation to keep it cool if you were running a 570W electric heater in the grow room. Of course these are all based off of some key assumptions, and im sure there are more efficient lights that give off a spectrum that will cater more to the plant...so you maybe be able to find a 600W bulb that will only put out 500W of heat. Just something to think about.

good luck sir,
agmotes165


--------------------
“The Universe is under no obligation to make sense to you” -NDT


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Invisiblecoda


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Re: how many plants can i grow in a 3x3 space? [Re: agmotes165]
    #299009 - 10/17/09 01:02 PM (7 years, 1 month ago)

Quote:

for veg: rate*334.8 per month for a 31 day month

for flower: rate*223.2 per month for 31 day month




think you got your decimal points mixed up there.

Should be closer to 33.48 a month for 24/0 veg and 22.32 for 12/12.

Lets do the math one more time.

600 Watt HPS = .6 KW's  (600 watts/ 1000 watts = .6)
.6KWH * 24 Hrs = 14.4 KWH per day
14.4 KWH * $.07 =  $1.008 per day
$1.008 * 30 Days = $30.24 a month for a 600 watt lamp running 24 hours a day

.6KWH * 12 hrs = 7.2 KWH Per day
7.2 KWH * $.07 = $.504 per day
$.504 * 30 days = $15.12 a month for a 600 watt lamp running 12 hrs a day


Quote:

  Kilowatt hour will be abbreviated Kwh rate should be somewhere around .10-.20 $/kilowatt hour in the US





That's off too, my $/KWH rate is .03  Most people pay around .07 or less per KWH


--------------------


MFDoom666: sobriety kills my buzz every time.


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Invisibleagmotes165
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Registered: 08/12/08
Posts: 1,552
Loc: Southeastern U.S.
Re: how many plants can i grow in a 3x3 space? [Re: coda]
    #299039 - 10/17/09 01:51 PM (7 years, 1 month ago)

actually i didn't...

my calc is the going rate of electricity in dollars per KWH times the number given...which is the kilowatt hours per month that i calculated.

for 18/6 photoperiod and 31 day month:

(600W * 558 hrs per month) = 334800 Watthours
(334800Wh / 1000 W/KW) = 334.8 KiloWattHours
Total cost per 31 Day month during veg = Rate * 334.8 KWH


for 12/12 photoperiod and 31 day month:

(600W * 372 hrs per month) = 223200 Watthours
(223200Wh / 1000 W/KW) = 223.2 KiloWattHours
Total cost per 31 Day month during flowering = Rate * 223.2 KWH

My math is based off of the individual's going rate of electricity, so it has no room for error in the assumption of rate.

so for a 24/0 photoperiod and a 30 day month,

Cost = Rate * 432 KWH

ad for a 12/12 photoperiod on a 30 day month,

Cost = Rate * 216 KWH

if you plug in ur .07 $/KWH into my equations, you will get the exact same answers that you got.

And you have an incredible rate for electricity sir, mine is upwards of .1012 $/KWH, I envy you :cool::thumbup:

peace,
agmotes165


--------------------
“The Universe is under no obligation to make sense to you” -NDT


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