Total Noob...Appreciate your thoughts

LetsGetCritical

LetsGetCritical

Well-Known Member
tightpockt said:
When I was in the navy and went to Australia we asked this lady if they ate kangaroos and she was like "oh yeah..kangaroos are everywhere around here..they're like pests..like deer in america since we wiped out their natural predator" and i said "what was their natural predator?" and without any joke she said "aborigines!" lol, that's fucked up. Besides that australia was cool as shit
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you can buy kangaroo in the supermarkets now and roos reach plague proportions if not controlled. a bit like rats. there would have been no shortage of them for the aboriginals who had a virtual smorgasbord to choose from ranging from all types of seafood to countless land flora and fauna
 
Doer

Doer

Well-Known Member
to Da Horse:

I thought I would talk a bit more about carbon filters. We know what a carbon filter is doing, right?

Super dried, "activated charcoal" will attach organic vapors from the air flow, to the carbon particles. If you have access to an oven to hold it, you can bake them out, and re-use.

Do carbon particles care which way the air is flowing? They do not.

So, when someone says you can use them in positive or negative pressure, push or pull mode well... you CAN. But, the trick is to know why we do stuff and not depend on sales opinions and patter.

Say I was running a room at positive pressure, for what ever reason I am using the filter. (can't think of one) Then the positive pressure is what PUSHES the airflow over the carbon. But, positive pressure as nice as that might be for some good reasons(???), is not good for a cannabis grow for some very good reasons.

Mainly we are trying to control smell. So, Positive pressure would be against us.
We use negative pressure, and pull exhaust on the space.

Also, reducing pressure, lowers temps but positive pressure will increase the temperature in the space. So while the maroons at the hydro store are good at repeating what the sales rep said, I bet they would be very hard pressed to answer in what situation you would find a PUSHed carbon filter in indoor agriculture.
 
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Doer

Doer

Well-Known Member
LetsGetCritical said:
you can buy kangaroo in the supermarkets now and roos reach plague proportions if not controlled. a bit like rats. there would have been no shortage of them for the aboriginals who had a virtual smorgasbord to choose from ranging from all types of seafood to countless land flora and fauna
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The tried to sell 'roo here. But, it's not beef. And the beef industry shut it down.
 
Chester da Horse

Chester da Horse

Well-Known Member
Doer said:
Thats clear.

The only reason I brought it up was that I have a really small space and originally planned on putting the carbon filter outside the growcave with the exhaust fan ducting into it and pushing the stinky air through... that would still generate negative pressure in the grow cave right? Its a mute point now tho, I crammed the filter inside and did it the 'proper' way
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Doer

Doer

Well-Known Member
Chester da Horse said:
Thats clear.

The only reason I brought it up was that I have a really small space and originally planned on putting the carbon filter outside the growcave with the exhaust fan ducting into it and pushing the stinky air through... that would still generate negative pressure in the grow cave right? Its a mute point now tho, I crammed the filter inside and did it the 'proper' way
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Well, there are ways to do it. And you can put the filter in a box outside the grow space. But, the exhaust fan has to be last in line.

If you were to pull with the exhaust fan, against the space and then tried to push that thru carbon on the other side, your exhaust fan would not work very well.

The point of all this is pulling giant volumes of cool air. Your exhaust needs to be cool as possible and somewhat slow transit time to give the smell time to attach to the carbon.. I have 36" x 10" carbon filter and I attached the 6" exhaust fan directly, that is the most efficient. But, I turn the fan control down to about 2/3, to make it a bit slower. You just play with it. But, when I get the transit time right, I smell nothing, inside or out.

To have ventilated negative pressure we have to make sure the exhaust is much bigger than the intake. So pulling a carbon filter is correct. You have a giant cylinder for intake and a high speed, 6" exhaust side output. That is correct.
 
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Doer

Doer

Well-Known Member
gardengardian7 said:
You can get 133g under 700-800w of CFL by themselves. Majority 6500k, 6400k, and some 5500k with a few 2700k... And vice versa during flowering...View attachment 3361812 View attachment 3361813
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Those are looking good, a bit over watered, but not too, too bad.

And this is no joke. Why would someone say that?

1/5 gram / watt is pitiful. sure, but it is YIELD. And he got that yield on the VERY CHEAP.

So, if he can produce 5 grams at that same price I can produce 1 gram with 1000w HID and all the gear to go with that, then I say we are EVEN. It takes me 1.2 KwH x 12 x 60-70 days, just for bloom.
 
tightpockt

tightpockt

Well-Known Member
I think pulling is better than pushing just in terms of fan efficiency. When you try to push air through a filter a lot of that air just bounces around inside the filter and never goes through reducing the cfm, I think either way works, you just have to have more fan power to move the same amount of air.
As far as the LEd's go..go into the forums and check out the "led and other lighting" section. In there are the most comprehensive discussion of diy led's and components anywhere on the internet. It's fun to see people who aren't even growing weed signing up to RIU just to take part in those discussions.
I think we're finally at the point, where, given the right purchases your can surpass HID and not break the bank. Sure, it seems more expensive up front but you don't need the cost of an air cooled hood, or ballast or bulb. Even if you change your bulbs out 3 times a year at $20 (for generic no name hps) that's $60...tripple that for decent horticulture bulbs and the costs add up.
Annnnyway...I hope this dude puts together a decent system and 3 months from now I'm subscribing to a grow journal.
 
Doer

Doer

Well-Known Member
OK, can you post a picture of your panel? Here is a build log and there are plenty of those, but I'd like to see what you are doing. Then I will take this over to another RIU section.

The noobs would really like to see what they could aspire to. I can't get 1000w HPS for $20. It's more like $70-$80 and without a meter there is no way to tell if they even produce PAR. :)

http://www.circuitsathome.com/diy-2/high-power-led-grow-light-a-build-log
 
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Doer

Doer

Well-Known Member
tightpockt said:
I have 4 of these, each pulling 104w. (52w per diode)
THe construction is kind of crude but I'm a function over form type of guy..there are MUCH prettier builds than mine on here.View attachment 3365079
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No, not for me. I am a down and dirty type of guy. That is the tits!

See you on the LED side. I'm sold. All about the heat sink, I see. I have some Arctic Silver paste left over from my Peltier Junction Cooler experiment bust.
 
blowincherrypie

blowincherrypie

Well-Known Member
Doer said:
Those are looking good, a bit over watered, but not too, too bad.

And this is no joke. Why would someone say that?

1/5 gram / watt is pitiful. sure, but it is YIELD. And he got that yield on the VERY CHEAP.

So, if he can produce 5 grams at that same price I can produce 1 gram with 1000w HID and all the gear to go with that, then I say we are EVEN. It takes me 1.2 KwH x 12 x 60-70 days, just for bloom.
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VERY CHEAP??? His power bill alone would keep that statement from being true.. Other setups may be more expensive initially, but if I can pull that same YIELD at a fraction of wattage (160)... well I would call that a win and 1/5 gram/watt pitiful (your words, not mine)... Unless the only option you have are CFL, a 7-800 watt cfl setup is just not very efficient.. THAT is why someone said that..
 
tightpockt

tightpockt

Well-Known Member
Doer said:
No, not for me. I am a down and dirty type of guy. That is the tits!

See you on the LED side. I'm sold. All about the heat sink, I see. I have some Arctic Silver paste left over from my Peltier Junction Cooler experiment bust.
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Keeping terminal junction temperatures down helps with the efficiency. They're on arctic 11 cpu coolers ($11 on amazon) I could probably push 100w through each diode but efficiency drops dramatically.
As far as the cfl thing...A watt is a watt. It either get converted into light or heat. I would imagine a $100 250w HPS setup is cheaper and cooler than 800w worth of cfl!
 
gardengardian7

gardengardian7

Well-Known Member
What makes it so great is i have a set bill of $90 a month. I try teaching but they dont listen. And it helps build your credit. IMG_20150305_150908.jpg Im showing you this so you can learn...look at the cost and at the beginning of a new year $0.00.
 
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