1550 watts of cfl s

[Al B. Fuct]

$120 for a 'real' HPS for a closet grow isn't $120. (for a room, it can work with little issue)

400W in a closet (a lot of us are in that category) is a lot of heat.
The $120 400W HPS is a bat wing.

For a closet grow, a air-cooled hood with duct and fan, is closer to $350.

I agree, for a closet or wardrobe with a 400, you'd need a cooltube, duct & a 150mm blower.

Still, $350... think about it. How many oz will that buy you? And how many oz will you grow over the life of that $350 lighting setup?

I have about $3500 or so in my SoG op. It puts out 3lb per month. Work it out.

 

[BigBudBalls]

For grins and giggles I did a little test today.
70W HPS vs 26W CLF (true watts : 100W equiv)
This was NOT done with a IR/laser temp probe, but a K junction thermocouple (much more accurate) into a Fluke 189. So actual mechanical contact with the glass.


Bulb glass temp (hottest spot on bulb):
26W CFL: 165F
70W HPS: 254F

26W CFL draw 26W from the outlet
70W HPS draws 82W from outlet.

Now, I'm thinking watts is more volume.

2 CFLs won't make 320F, but would get the room quicker to the 160

Well, it's a bit simple to say that watts = heat, while that's true in a general sense.

Your light draws a certain number of watts of electrical energy from the AC mains. Some of that is converted into light energy, some is wasted as heat from various loss points such as the ballasts in fluoro or HID lights.

At the end of the day, it's apples and oranges. You simply cannot compare fluoros to HID because there's no such thing as a fluoro with similar luminous output to an HID. Fluoros deliver low intensity light, which produces thin, fluffy buds.

It's too cheap to just do it right from the get-go. Life's too short to grow crappy dope.

 

[BigBudBalls]

I agree, for a closet or wardrobe with a 400, you'd need a cooltube, duct & a 150mm blower.

Still, $350... think about it. How many oz will that buy you? And how many oz will you grow over the life of that $350 lighting setup?

I have about $3500 or so in my SoG op. It puts out 3lb per month. Work it out.

I'm *only* poking a the a 400W HPS is just $120.


How much is an oz? I go *zero* idea. Been about 10 years since I smoked.

I do agree with quality lights. I'm on a lonely pair of 150W. For my winter grow it will be upgraded to a 600W single. Figure I can grow all I need during the cooler months and waste less energy.

 

[Al B. Fuct]

Bulb glass temp (hottest spot on bulb):

Yes, a lamp that runs warmer will put more thermal energy into the air around it, but there's a number of variables up to and including the surface area of the lamp, the thermal conductivity of the glass and the rate at which it can sink heat.

However, I don't see how lamp envelope temp is a functionally useful measurement in a grow op (but thanks for doing the experiment anyway ). The plants only care about the air temp.

I'm *only* poking a the a 400W HPS is just $120.

If you have an entire spare room to grow in, a relatively large airmass compared to the lighted floorspace, a 400 can be used without a cooltube with great success, so $120 is indeed a reasonable figure. If you're trying to grow in a very small airspace with a 400, a closet or wardrobe, there won't be a lot of airmass to sink lamp heat into. Keeping the air which contacts the lamp tube away from the plants (with cooltubes) solves the problem, but yes, it costs a bit.

How much is an oz? I go *zero* idea. Been about 10 years since I smoked.

1oz = 28.4 grams.

I do agree with quality lights. I'm on a lonely pair of 150W. For my winter grow it will be upgraded to a 600W single. Figure I can grow all I need during the cooler months and waste less energy.

You'll love the 600. You'll wonder why you didn't get it sooner.

 

[SomeGuy]

$120 for a 'real' HPS for a closet grow isn't $120. (for a room, it can work with little issue)

400W in a closet (a lot of us are in that category) is a lot of heat.
The $120 400W HPS is a bat wing.

For a closet grow, a air-cooled hood with duct and fan, is closer to $350.

I run in a closet.. very small with 160cfm fan and carbon filter. My temps never go over 84. lowest is 70, but can be controlled by the exhaust fan. Temps are manageable in small spaces.

 

[bobtokes]

Al b fuct
after your's and other ppl's input earlier on in this thread ive decided to veg with cfl's and flower with a 400w or 600w hps ive read somewhere that the 600w is more cost efficient than the 400w what do you think.
how many plants could i cover with a 600w hps in a set up like your perpetual harvest. space is not a problem.
is sweet tooth 4 relatively easy to grow for a begginer
cheers

 

[Al B. Fuct]

With proper SoG trimming you could get about 30-32 under a 400, 45-48 under a 600. Figured on 50W/sq ft (8sf for a 400, 12 sf for a 600) and 4 plants per sf.

That's really packing them in- you'll want a sulfur burner to keep powdery mildew down and lots of air circ and ventilation through flow.

Any strain of cannabis is as easy to grow as any other. Sweet Tooth #4 is hard to come by these days. Choose any mainly indica dominant hybrid for best yield in SoG.

 

[nickfury510]

With proper SoG trimming you could get about 30-32 under a 400, 45-48 under a 600. Figured on 50W/sq ft (8sf for a 400, 12 sf for a 600) and 4 plants per sf.

That's really packing them in- you'll want a sulfur burner to keep powdery mildew down and lots of air circ and ventilation through flow.

Any strain of cannabis is as easy to grow as any other. Sweet Tooth #4 is hard to come by these days. Choose any mainly indica dominant hybrid for best yield in SoG.

do you know a rough estimate on the yeilds

 

[ceestyle]

Saying lumens don't add is simply incorrect. If we had two suns, we'd be hot as fuck.

 

[Al B. Fuct]

The lumen is an SI unit which measures brightness.

Putting one light next to another light doesn't make either one brighter.

A lux meter tells the tale.

With one CFL (but could be any light source):



With two equal sized CFLs:



Huh, the reading is essentially identical.

As Julius Sumner Miller said, WHY is it SO?

Simple, the lux meter is measuring the intensity of the highest energy photons it sees- it is NOT measuring the QUANTITY of photons. Thus- 'lumens don't add'. If you have a 1500 lumen lamp next to another 1500 lumen lamp, the meter will read 1500 lumens. If you have a 1000 lumen lamp next to a 1500, the meter will read 1500.

It is the energy level or intensity of the light which drives photosynthesis. Higher intensity light penetrates foliage better than lower intensity light, as well.

If you need more intensity you get a brighter light, not more dim ones.

 

[Al B. Fuct]

do you know a rough estimate on the yeilds

jeez, been a while since I flowered with a 400, but once you get your practices and parameters right, 3/4oz per isn't outrageous.

 

[homegrownboy]

Done right...using my 400W, I get around 2oz per plant, DRY!!!

I let my plants mature to it's peak (preflower), then put it into flowering, some mature faster then others but generally around a few days apart.

Between weeks 4-6 of the plants life i top it, let it grow for another week to repair itself and start growing again...then i LST for the last remaining weeks till the plants preflowers are distinct.

 

[pppfemguy]

yea dude listen to that al dude other then that i gotta say mh/hps over cfls anyday

 

[homegrownboy]

Al's wise.

 

[pppfemguy]

sorry to the guy who started this thread im NOT trying to jack your thread but Al closed the harvest every 2 weeks thread so i gotta ask him on this dude is that whole harvest every couple a weeks thing possible or a hoax?? lol sounds crazy dude i know it would save me alot of money not havin to buy weed every week

 

[homegrownboy]

It's not bull shit. I used to have a 2 week rotation...it takes sometime to get there...but once you do, it's all fun from there...just don't go TOO big with it...unless you have ALOT of help...lmao!!!!

 

[Al B. Fuct]

Oh, I believe HGB's per-plant yields, no problem. He's vegging, making for larger individual plants.

In SoG, we deliberately DON'T veg, so to get short plants- each plant is essentially just a top cola. We also prune off all the growth on the lower 1/3 of the plant, no branches longer than an inch or so.



Short plants are the indoor grower's friend. Even the mighty 1000HPS can only penetrate foliage so deeply; about 40" from the plant tops, given a roughly 18-20" lamp-leaf spacing.

SoG relies on growing a large number of small plants- but all you get is top cola buds, the biggest, densest and heaviest colas on the plant. No small, fluffy popcorn buds from down low on the plant, out of the effective range of the light.

Thing is, I can put 4 SoG plants in a square foot, each yielding on the order of 3/4-1.5oz each. That's 3-6oz per sq ft. Bushy plants, which have been vegged before flowering, take up too much space and drive per-area yield down.

 

[Al B. Fuct]

is that whole harvest every couple a weeks thing possible or a hoax??

Complete fraud, total fabrication.

heh...

It's as simple as feeding 1/4 of the lighted floorspace plant capacity into a flowering area, every 2 weeks. After you load the pipeline, you get plants out every 2 weeks as you feed in more plants.

The thread's closed but you can still read it. Start on page 1 and don't stop until your eyeballs fall out.

 

[pppfemguy]

could you give me a list of everything i would need to get started? or is that a stupid question? haha so far right now i got 1000 watt ballast light with reflector...nutes...some mylar...a few fans and a 1 plant bubbleponic system ive read lots and learned lots but just a rough guess that the set up your teaching people about will cost about 2-3 thousand or more or less or what

 

[Al B. Fuct]

go read the thread!