400W HPS Grow Setup - HELP!

MyGTO2007

MyGTO2007

Well-Known Member
jact55 said:
wow gto2007, that is a dream grow set-up you got!!
Click to expand...
Thanks Man!!!
it took about a year to think about, design and then build..its a little of everything on here and then some, doing some exhaust and intake upgrades, had my room all dialed in............then had to go buy another Light and fucked everything up...but got her all dialed in again tho!!!!
Did you read the whole journal????
 
RedKasper

RedKasper

Member
Alright...I've been searching on ebay all day and I think I finally found the right grow setup...

Its a Greenhouse Digital Ballast.....400w
w/ a Supernova Glass Lensed Air Coolable Reflector...
w/ one HTG HPS Light @ 55,000 Lumens
w/ one Agromax MH Light @ 35,000 Lumens

Total Price: $230 + $35 Shipping

(I tried pasting the link, but I'm having trouble.....the ebay item # is 120424376492)

Will that be enough for 6 clones?
Is the Glass Lensed Reflector necessary?

I'm planning on using a couple fans to control the temperature in my closet....the dimensions are roughly 2.5 x 3.5 with plenty of height.

Average temperature is usually low 70's....

Any help would be much appreciated....Thanks!
 
technik420

technik420

Member
RedKasper said:
Alright...I've been searching on ebay all day and I think I finally found the right grow setup...

Its a Greenhouse Digital Ballast.....400w
w/ a Supernova Glass Lensed Air Coolable Reflector...
w/ one HTG HPS Light @ 55,000 Lumens
w/ one Agromax MH Light @ 35,000 Lumens

Total Price: $230 + $35 Shipping

(I tried pasting the link, but I'm having trouble.....the ebay item # is 120424376492)

Will that be enough for 6 clones?
Is the Glass Lensed Reflector necessary?

I'm planning on using a couple fans to control the temperature in my closet....the dimensions are roughly 2.5 x 3.5 with plenty of height.

Average temperature is usually low 70's....

Any help would be much appreciated....Thanks!
Click to expand...
honestly you wont need the cool tube reflector for a 400w in a open big space (if you have air moving, fans, etc.)
 
taffo143

taffo143

New Member
jact55 said:
redkasper

what are your ambient temps?? (normal room temps). is the area in a basement or an attic?
obviously a air cooled hood is superior to a standard hood. but this makes it a necessity to but an inline fan and some ducting. (which you might need anyways)
if you are going to use the normal desk fans, make sure that you have one blowing right under the light. i would suggest using an exhaust and intake in your area if possible, to circulate in the cool air and puch out the hot air. i just bought a 160 cfm duct fan at home depot for 30 bucks. honestly it sucks, but if works. if you do this make your intake hole in the bottom of the grow room and make it larger than your exhaust hole.

anyways, you can probably make the desk fans work, but it could not also. just depends on the temp of your house/enviorment, how much fresh air you can get to your grow space and such

let me know if you need pics of fans/ducting ect. i can snap some easily
Click to expand...
wrong!!!!!!!!!! ur exaust should be bigger than ur intake!!!!!!! otherwise u wont get cyrculation
 
jact55

jact55

Well-Known Member
I dont think so!!!!!!! if the exhaust is bigger than the intake then you can get negative pressure. you would be pushing out more air than you could be sucking in. in other words you could not be replacing the air at the same rate that is being pushed out by the fan. does this make sense to you?

this is how i understand it to work, please correct me if i am wrong people, thanks.
 
Hairy Bob

Hairy Bob

Well-Known Member
jact55 said:
I dont think so!!!!!!! if the exhaust is bigger than the intake then you can get negative pressure. you would be pushing out more air than you could be sucking in. in other words you could not be replacing the air at the same rate that is being pushed out by the fan. does this make sense to you?

this is how i understand it to work, please correct me if i am wrong people, thanks.
Click to expand...
He is right, you do want the exhaust slightly smaller than the intake, to create negative pressure which stops air/odour leaks from the room. Any gaps in the framework, walls, doors etc will be sucking air in, rather than leaking it out.
As long as you only make the intake slightly smaller, plenty of air will get in, and even if the intake was tiny by comparison, air would still get in at a similar rate.
The lower the pressure inside the growroom, the faster the air is being pushed through the intake hole, by the pressure of the surrounding air.
This is the reason why an intake fan is unnecessary in all but a huge room, as all it could do is bring in the same amount of air that would enter of it's own accord anyway.
 
DuckAttack

DuckAttack

Member
I have a Grow tent 4x4x6.5, 400 watt HPS(non-air cooled hood) and damn it gets hot. I will invest in a cool tube one day. But in the meantime for extra ventilation I built this for under $20. This things is way more powerful than most cheap 4" inline fans.

Walmart: $12 - 12" 3 Speed Fan
Home Depot: 8"-6" Duct reducer
House: Duct Tape

Takes about 2 minutes with this fan running alone to cave in the sides of my tent slightly from the suction. I have no clue what the CFM is, I actually just started laughing because it can pump some damn air. Walking into the jet stream from this baby 6 feet away and your hair totally blows over to the side. I have put a piece of tubing since so light will not leak in. It brought down my temps a good 5-8 degrees. I will take anything living in the Southern California desert when the temps are in the 100's all summer.
 
taffo143

taffo143

New Member
jact55 said:
I dont think so!!!!!!! if the exhaust is bigger than the intake then you can get negative pressure. you would be pushing out more air than you could be sucking in. in other words you could not be replacing the air at the same rate that is being pushed out by the fan. does this make sense to you?

this is how i understand it to work, please correct me if i am wrong people, thanks.
Click to expand...
i have a 4ich exhaust, and the intake is slightly smaller, about 3 n half inch, that creates good suction and the airflow is smack on!!!
maybe it works both ways, it works for me this way anyhow, peace
 
C

col.forbin

Well-Known Member
Im also thinking about going with a 430 watt or a 600 watt HPS for my 10 lowryder #2's. I have them in a 3.5'x4.5x8' closet. Could someone advise me which one I need? Is 430 enough? Also, ventilation could be a problem...is the 600 watt going to put off a lot more heat?
 
RedKasper

RedKasper

Member
So I finally got my grow light system today...and I decided to spend the extra cash and get quality parts.

400w Lumatek Digital Ballast
Sun System Yieldmaster II Reflector - Supreme
400w HPS Super Hortilux Bulb
w/ a Dual-Outlet Digital Timer, Yo-Yo Pulley System, and a Thermometer/Hydrometer

I got it all for a tad under $400....

I know I could have gotten a much cheaper system on HTG Supply or other sites, but I felt the quality and warranties were worth the extra cash in the long run.

I hope my clones appreciate it! Thanks for the help everyone.
 
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