Spiralarchitect
Active Member
How many times per minute do I need to change the air?
I was planning on having a system capable of changing it 3 times per minute. Is this practical / realistic? I've heard conflicting reports on this. One friend says 1 time every 3 minutes is fine, another friend (whose plants look really, really good) said he does up to SIX times per minute, but he's also dealing with a much smaller space than I am.
(My growspace is roughly 1300 cubic feet.)
So if I wanted to ventilate it
I plan on using aircooled HID lights. (7,000 watts.)
I would like to do CO2.
My climate can get fairly hot. Mid-Southern California.
I plan to use carbon scrubbers on both air coming in and air going out. (If there's a better way to filter air coming in for fine particles such as dust, seeds, insects/eggs, pollutants, etc., I would love to know.)
How will this affect the following:
-Size of intake/outtake
-Should I be using active intake & exhaust or just exhaust?
-CFM requirements?
- How should the fans be positioned relative to the carbon filters? Should I be sucking air through the carbon or blowing air through it?
Axial vs Centrifugal.
Been looking at axial fans to meet my CFM needs. It seems that it's much easier to get an axial fan with a high CFM rating.
What occurred to me though is that...centrifugal fans move air at much higher pressures, right?
If I'm trying to create an environment with a lower pressure than it is outside (as if I were in the mountains) would this be a factor? Please forgive my ignorance.
Other questions:
What kind of ducting should I be using?
I've heard that rigid ducting is more efficient and less noisy.
2. What CFM rating should I have on the fans connected to the lights? Should I have both an intake and an exhaust fan or just exhaust? (with a large intake hole)
Other, Other questions =P:
I've seen a lot of hype about such and such a bulb being so much more efficient, producing more lumens and more PAR light, etc. Is it really worth it to buy one of these bulbs or is it just hype? Howabout ballasts? Magnetic vs Electronic? Are cheap ballasts bad?
What are your guys' opinions on cool tubes?
The voltage in my area is 220. Should I be using equipment rated at 240v?
Thanks for answering all these questions, gentlemen. If I've missed an important sticky or post I apologize and would appreciate it if you point me in the right direction.
I was planning on having a system capable of changing it 3 times per minute. Is this practical / realistic? I've heard conflicting reports on this. One friend says 1 time every 3 minutes is fine, another friend (whose plants look really, really good) said he does up to SIX times per minute, but he's also dealing with a much smaller space than I am.
(My growspace is roughly 1300 cubic feet.)
So if I wanted to ventilate it
I plan on using aircooled HID lights. (7,000 watts.)
I would like to do CO2.
My climate can get fairly hot. Mid-Southern California.
I plan to use carbon scrubbers on both air coming in and air going out. (If there's a better way to filter air coming in for fine particles such as dust, seeds, insects/eggs, pollutants, etc., I would love to know.)
How will this affect the following:
-Size of intake/outtake
-Should I be using active intake & exhaust or just exhaust?
-CFM requirements?
- How should the fans be positioned relative to the carbon filters? Should I be sucking air through the carbon or blowing air through it?
Axial vs Centrifugal.
Been looking at axial fans to meet my CFM needs. It seems that it's much easier to get an axial fan with a high CFM rating.
What occurred to me though is that...centrifugal fans move air at much higher pressures, right?
If I'm trying to create an environment with a lower pressure than it is outside (as if I were in the mountains) would this be a factor? Please forgive my ignorance.
Other questions:
What kind of ducting should I be using?
I've heard that rigid ducting is more efficient and less noisy.
2. What CFM rating should I have on the fans connected to the lights? Should I have both an intake and an exhaust fan or just exhaust? (with a large intake hole)
Other, Other questions =P:
I've seen a lot of hype about such and such a bulb being so much more efficient, producing more lumens and more PAR light, etc. Is it really worth it to buy one of these bulbs or is it just hype? Howabout ballasts? Magnetic vs Electronic? Are cheap ballasts bad?
What are your guys' opinions on cool tubes?
The voltage in my area is 220. Should I be using equipment rated at 240v?
Thanks for answering all these questions, gentlemen. If I've missed an important sticky or post I apologize and would appreciate it if you point me in the right direction.
