1st ScrOG plans, feedback appreciated

[MegaOctane12]

MegaOctane12, what I 'saw done' to keep the fan noise down is to use a rheostat to dial down the fan speed. You can, like, tune it that way to produce less noise. With the cab airtight and closed, a 6" fan dialed down isn't really that bad. A 6" centrifugal fan spinning slower than its max can move the same amount of air as a 4" fan, or more, but do so with less noise. Photoperiod here is night, no probs. And it has to be because, yeah, the heat would be an issue with these 100+ degree F days if the lights were on during the day.

Obviously, there's no real heat probs with the cab I posted an image of, as you can see not just an HPS light (400w) but also eight extra 30-watt warm CFL bulbs going. I think a 600w light would work okay, but that'd be less flexible in terms of light placement than a 400w and some moveable CFLs. A 600w light would be more efficient on the electric bill, I'm sure, but you can't have everything.

What seems like it could be a problem is fitting a carbon filter into a 3' wide cab. I've seen some short, stocky barrel-shaped ones, so I guess it's possible, but those are large in diameter (to make up for the loss in length while still providing enough surface area), so that'll chew up a lot of volume. That's the only thing I'd be concerned about from that diagram.

Yeah sorry man I totally forgot to mention the fan speed controller, I have one. I made the mistake of buying only a 175m3/hour fan, the smallest they do in the RVK, although this works perfectly for the space, I learned afterwards that its better too buy a more powerful fan and 'dial it down' like you said, so that you get the same exhaust power as you would the 175m3 fan but much less noise. I would probaly sell this if the opportunity came up and get a better one. Someone suggested that I use the box the fan came in and pad it with bubble wrap or use that styrofoam type material but too be honest I couldn't be assed with it. I just settled for never using the fan at night.

[pinkchick]

Okay, let's see....

I'll probably start with either Big Bud or Northern Lights, I have both coming in this week - sometimes it pays to have friends still living in the Netherlands. Some of the send-a-seed shops have been busted lately, and I really want to avoid a visit from the law. I've been told not to go for lowryders with my set-up, although their low growth seems like a real advantage.

The light "thingies" can be seen here: http://forum.hanfburg.de/upload/Tooltime11.jpg.jpg. In general, the Germans have a pretty cool construction section where I've been stealing ideas: http://forum.hanfburg.de/fhb/showthread.php?t=160044

This is the fan that's gonna be used, it's a 410cbm/h: https://greenweedshop.de/shop/images/inline_3.jpg

The fan is supposed to be hanging from rubber bands, usually used for bikes - I am curious to see how that works out. The carbon filter is huge and will defintely take up more space than I would want it to, even when placed horizontally - I might try placing it outside of the cab. I've gotta see what everything looks like once it arrives.

And yes, I'll put my digicam to good use and come up with a construction report... Hopefully my first ever cabinet will be worth it.

[jamstigator]

I don't know if you plan on having a 'utility shelf' at the top of your cabinet or not. (Pretty handy to have, I stash twist-tie line, wire cutter, remote thermometer, digital ballast, small oscillating fan, power strips, timer, etc up there.) If so, that gave me some problems with my fan (a 6" EcoPlus fan). The fan had mounting brackets attached which were simply too large to fit in that space. It also says you can hang it with big rubber bands, but the space I had to work with was a bit too tight for that too.

What I did was take off the mounting brackets, and cut a hole in the utility shelf. I then put down weather stripping around the hole, and laid the fan onto the weather stripping, with the fan's intake duct flange hanging down a bit through the hole. You can sorta see from this pic. The whole lay-fan-on-weather-stripping plan worked really well in terms of damping vibrational noise. The fan isn't actually screwed down or anything; just its weight and tightness in the hole I cut, and the ducting attached to the top (exhaust) and bottom (intake) holds it in place.

[MegaOctane12]

The light "thingies" can be seen here: http://forum.hanfburg.de/upload/Tooltime11.jpg.jpg. In general, the Germans have a pretty cool construction section where I've been stealing ideas: http://forum.hanfburg.de/fhb/showthread.php?t=160044

This is the fan that's gonna be used, it's a 410cbm/h: https://greenweedshop.de/shop/images/inline_3.jpg

The fan is supposed to be hanging from rubber bands, usually used for bikes - I am curious to see how that works out. The carbon filter is huge and will defintely take up more space than I would want it to, even when placed horizontally - I might try placing it outside of the cab. I've gotta see what everything looks like once it arrives.

Those light traps are exactly what I've been looking for, whereabouts do you buy them? Do you have a website translator, a free one, so I can read this, http://forum.hanfburg.de/fhb/showthread.php?t=160044. By rubber bands, I know the type you mean, they would work perfectly.

What I did was take off the mounting brackets, and cut a hole in the utility shelf. I then put down weather stripping around the hole, and laid the fan onto the weather stripping, with the fan's intake duct flange hanging down a bit through the hole. You can sorta see from this pic. The whole lay-fan-on-weather-stripping plan worked really well in terms of damping vibrational noise. The fan isn't actually screwed down or anything; just its weight and tightness in the hole I cut, and the ducting attached to the top (exhaust) and bottom (intake) holds it in place.

Was curious to know how effective the weather stripping is in absorbing the vibration? That seems like a very logical setup taking into consideration the dimensions. What's that DORAN light trap your using for passive intake, wouldn't mind checking out whoever sells them. I notice your fan is connected too unisulated ducting, or is that the type with the yellow foamy stuff inside, instead of out?

[jamstigator]

The weather stripping has worked great for me, no noticeable vibration whatsoever. The Doran 8"x8" darkroom louvres, they're sold here and there, you can probaby google them. I got them from bhphotovideo.com myself, think they were about $25 each. I saw them elsewhere for around $20 I think, but I have had good experiences with bhphotovideo, so they got the business. The ducting is just el cheapo uninsulated ducting. If the noise was a major factor for me, I'd probably replace it, but since I don't really have a prob with the noise...

Link: http://www.bhphotovideo.com/bnh/cont...ughType=search

[pinkchick]

The light traps are a combination of light trap and air control - air goes in, but not out. They are sold at growshops, incl. the German one I mentioned. They aren't cheap, though - 20 â?¬ a piece - and I am looking for an alternative right now. The only translation site I know is http://babelfish.altavista.com/, incl. German-English.

[jamstigator]

One-way airflow sounds nice. They do look bigger. I guess the only time I'd really miss having that ability is when I turn my fan off, which is pretty rare, and only happens when I have to have someone in the room with the cab (last time was a satellite installation technician). On the other hand, they look big and even less stealthy than the Doran darkroom louvres. Guess it's six of one, half dozen of the other, for me. If you use co2, I could see one-way airflow louvres as being more useful, so you don't waste any co2 through leaks when your fan is off.

Gonna try co2? I considered it, but it adds so much to the expense and complexity, and I don't sell anything, just personal consumption, so I decided against it. Doesn't mean it can't be done, I know it can, I'm just too lazy and cheap to mess with it just for personal consumption.

[pinkchick]

The cab's gonna be in my bedroom, which no one really enters - even without the cab, it just happens to be my messy room. Sometimes friends stay over, but I trust them 1000%, so no big deal. As for the light traps, I am not worried about light shining through from the inside, but more about light disturbing my flowering period. We'll see... I am planning a lot of trips to the hardware store next week.

I got the wood cut up yesterday, will pick it up tomorrow... it was raining so hard yesterday that we couldn't transport it with the hood up - now I have a colleague helping me with my "book case". The actual construction wil have to be next week - which will be a challenge since I have to build the whole thing on my one - and I am just a very weak female.

[MegaOctane12]

Mind pointing me in the direction of the light traps on https://greenweedshop.de/shop ??? , they could have a translation to make it easier... what a fucking nightmare. I would definately buy one of those, seeing as its got flaps, could probaly get by with just the one.

Jam I would prefer the darkroom louvre you recommend but the shipping is like almost twice as much as the cost of the item, I don't live in the US.

http://www.bhphotovideo.com

[pinkchick]

You should be able to get similar light traps incl. one-direction air vents at a big DIY or someone specializing in ventilatioon. I found some English-speaking store as well:
http://www.screwfix.com/app/sfd/cat/...35279&id=16195