Please critique setup!

[BennyHogan]

Sorry for the delay in getting back to this thread.....I've been putting off expanding from my original design, but will be doing it soon!!!
Hoosier thanks for the drawing (I hope your not currently in Indy as the laws there r cray cray!!!!) I like the idea of going vertical but really feel that a 2 plnt scrog could yield more than 2 sog'd.....correct me if I'm wrong??? A vertical scrog could be wild but it seems a whole lot more difficult to orchestrate compared to a horizontal scrog.

In terms of ventilation my temps have been fine so far with my n00b-like initial design so I don't think I'm gonna cut another hole tho I easily could. RIght now, I'm having a pain in the ass lightproofing the current holes I have.....PVC piiping is terrible to work with (I've posted another thread bitching about this problem so no need to rant here)

I'd like to somehow connect a Veg cab to this thats smaller, but I'm having enough trouble with this as it is......any suggestions???

What are your thoughts on venting directly into the room???? Does filtering air and exhausting it and then eventually intaking that same air negatively affect the plant somehow????

Thanks for any help,
Much Love

When I expand, I'm planning on using the design that FreezerBoy recommended. With the 60in height I can hand the filter diagonally at the top and have the fan hanging either below or above it......I assume it that it would be best to have the fan above the filter at the top blowing out??? I really like the idea of everything being housed inside in the cab as I can't think of a way of stealthly having the Can sitting outside of the cab and still being properly ventilated.

 

[FullMetalJacket]

Not sure what design you went with but dont recommend pulling from both the "cooltube" and filter with the same fan if using the can filter 2600. The 2600 has a max recommended cfm of 50 and 50 cfm is not enought to cool your lights ....

And venting back into the room is fine as long as that room has airflow..I have vented out into the same room and the past and just used a window fan while running lights at night. This kept the room air cool and C02 rich just be careful that the room conditions allow you to maintain internal cab conditions properly.

 

[FullMetalJacket]

Also you cab sounds like what i had in mind when i built mine if you want to check the link in my sig...

 

[green_tea]

50 CFM would be plenty IMO. thats close to one new cubic foot of air every second that gets sucked over the light...

plentyyy. I mean its not like he is running a 1000W bulb.

hell not air cooling the hood would be fine too, but then he would have to make sure the fan can fully cycle the air in the cab every minute (which is probably way overboard anyway)

 

[FullMetalJacket]

50 CFM would be plenty IMO. thats close to one new cubic foot of air every second that gets sucked over the light...

plentyyy. I mean its not like he is running a 1000W bulb.

hell not air cooling the hood would be fine too, but then he would have to make sure the fan can fully cycle the air in the cab every minute (which is probably way overboard anyway)

I guess 50 will be enough especially in combination of always exhausting your chamber as you would be doing with this setup. I didnt realize you were only rolling with 150 w hps... sorry

I was out of context as i run a 600w in a cooltube and dont always exhaust my 36 cu ft chamber. In fact i try to only exhaust my chamber for like 5 min every three hours. But with this set-up i get too much heat with anything less than about 275 cfm. I actually adjust that light fan to raise lower temps in my cab...

Thanks for bringing this up greentea. Last thing i want to do is mislead someone...

here is an equation i see around...note it doesnt take into account exhausting your chamber just the "light tube". I think it is the max temp as it doesnt take into consideration cubic area of the chamber either. Based on my testing it is accuarate...

---
Take the lamp wattage, multiply by three, and divide by the target temp rise to get the CFM requirement.

Say you have a 70 degree room. You want the box to get no hotter than 85 degrees inside. 1400 x 3 / (85 - 70) = 280 CFM.

600*3/10=180cfm

--

so in your case 150*3 /10 = 45 cfm

Your definitely money....

 

[BennyHogan]

Not sure what design you went with but dont recommend pulling from both the "cooltube" and filter with the same fan if using the can filter 2600. The 2600 has a max recommended cfm of 50 and 50 cfm is not enought to cool your lights ....

And venting back into the room is fine as long as that room has airflow..I have vented out into the same room and the past and just used a window fan while running lights at night. This kept the room air cool and C02 rich just be careful that the room conditions allow you to maintain internal cab conditions properly.

FUllMetal: where did you see that the Can 2600 had a recommended CFM of 50?? The only literature I could find said 95CFM and it didn't say if that was the Max CFM or recommended. I have 90CFM HYdroFarm Active Air Blower.

I like your setup a lot but I don't want to deal with getting a plasma cutter and dickin around with metal. I do however admire your skills and would love to have something like you have if I didn't have to build it.....lol!!! I'd love to have a mini version of yours made out of wood.....but once again I'm having enough trouble with my current design.

 

[FullMetalJacket]

Yea i meant max. I went to the can filter website
link here-
2900

It actually says 42 i rounded to 50. I saw higher 90's figure as well on a couple vendors sites. If you notice those same sites list the 9000 as that same high 90's cfm number. Not sure which one to believe though...I run mine at 50-60 and am not getting any smells but i only use mine for veg. Your fan may be ok, im sure it is. Mine is an inline fan that does 100 cfm but at .20 Static Pressure it drops down to about 60. I have a speed controller just in case i do need to slow it down.


Specifications

Max cfm: 42/71m³h @ 0.1 sec contact time
Prefilter: Yes
Mounting: Bayonet
Flange: 4"/5" Dimensions: (with pre-filter)
·Outside Diameter: 140mm/5.5"
·Height: 453mm/18"
·Total Weight: 4.5kg/9lbs.
·Carbon Weight: 2.1kg/4.63lbs
Pressure drop at max cfm: 42pa/ .20wg

Thanks for the compliments on the cab, i hate building things cant wait till its done though so i can ditch the closet dirt grow...

Nice to see someone crunching the numbers such as yourself, i was where you are 2 weeks ago and dont envy you one bit...