Venting Using 2" PVC?

[Hempsouth]

Check out LED site: growitled.com this guy has some great stuff

You might be able to go from 4" to 3" and then bush down from 3" to the 2".

My components are metal vacuum tubing, maybe look at muffler pipe at JC Whitney or something comparable. One thing I failded to mention is I had to put a glass lense cover in my light hood for the small fan to vent properly.

[stra8outtaWeed]

Stra8outtaWeed's got some of the best LED nugs I've seen, check out his grow log, it's quite informative.

thanks BTF~ i appreciate the comment...tried to send more rep your way...when it lets me :thumbsup:

[bigsby]

I'm putting my venting issue on hold while I determine my lights. I'm being tempted by the LED option. No heat means I could just scrub and exhaust to the adjoining room without need for vent. I many still make use of the 2 inch PVC to pull in fresh air but not sure.

If I can do LED right at a reasonable price then I'll likely go that route. If not, I'll be back here working out my venting issue.

[pappabear]

I think you'll do fine with a 400 HPS as they do not put out that much heat, at least nothing that a small AC can't handle. You'll have to do some construction for the ventilation system. Remember your babies need fresh air as well as exhaust, 2 inches in most cases will not work. Also take into consideration future upgrades if this cycle goes well.

I know it's a basement but don't you have a window or something? I wouldn't use the house ventilation or vacuum system in conjunction with your grow, isolate the two so there is zero chance of odor escaping.

What are your relative humidity levels in the basement?:rastasmoke:

[bigsby]

It's a killer. I have tied myself in knots over the venting issue. I'm leaning towards venting into an adjacent room using a carbon scrubber together with an ozonator or two. Widening my 2" PVC pipe to 4" will be all kinds of hassle. It can be done but it would require joining with the vacuum exhaust. No windows in my grow room. There are windows in the adjacent room and I would leave them open to get some fresh air but the plants will have to do with the relatively stale air in the basement. Of course, I plan to include a few intake vents but these will be drawing air from the basement. I can't say what the relative humidity is precisely. I would imagine it is on the higher side depending on the time of year without a great deal of fluctuation from day to day. I do not want to get into AC issues if it can be avoided. Thoughts on this issue appreciated.

Less than ideal I know but these are the conditions that I'm working with. Vent and other construction issues are not a problem. I can build whatever I need.

Thanks for the input.

[bigtopsfinn]

I don't want to confuse you more, and this is not typical advice for a new grower, but have you considered a 'sealed room'? That is, no exhaust, no intake... you need heat, perfect humidity, plenty of light and co2 for that though, and everything must be dialed in: http://boards.cannabis.com/advanced-...ent-guide.html

Just wanted to throw it out there as an option, and the guide is a good read anyways. This will cost some $$$, but it's probably worth it for the peace of mind and superb growth. :jointsmile:

[AquaponicHerb]

use a venturi to suck the air out of the room with 2" air inlet and 500 gph rated pump with a narrow throat venturi design

[bigsby]

A sealed grow room, eh? Interesting but I need to keep it simple. I'm taking on quite a bit as it is and feel that dealing with that many issues would be overwhelming.

I've settled on my strategy for venting and odor control - a good 6" carbon scrubber vented to an adjacent room with an ozonator in the vent room. I can also place one elsewhere in the house if needed. My intake will have to be passive with some fresh air coming from a window located elsewhere in the basement. I am going to eliminate the external vent all together. Making it work would be too destructive/disruptive with the other utilities that are currently utilizing the space - whole house vacuum exhaust, 2x electrical out, and gas line for the grill. Upgrading the vent to 4" could be accomplished with considerable work but risks to the vacuum. Scrubbing and venting interior to the house makes the most sense. If I face odor issues then I'll take the steps needed to vent externally at that time.

Following the advice of someone here I have settled on my grow room particulars / strategies. Now I'm gathering the materials. I'm still not ready to build so I'm just planning, reading, learning. I'm going to do a scrog setup. I've increased my room size so that I can work comfortably around the scrog. The scrog will be 32" x 54" and I will be looking to put 4 plants under the screen. My room size will be 6'W x 5'L x 6'6"H. I'd like to have the option of expanding the size of the scrog in the future hence the room size. The room will be wood frame construction with drywall, although I am considering other wall board construction due to humidity issues. Thoughts welcome. I will create a mylar box to enclose my scrog.

Thanks for all the help with my venting setup. Any thoughts on the strategy outline appreciated. Recs on carbon scrubbers too!