I got my DR120 this week and I have to say I'm REALLY impressed with it as I'd never actually seen one in real life until this week. They seem to have thought of everything. I can't wait to do my first scrog next year, and I didn't realise that it was possible to unzip three sides of the tent, which is perfect for working on a scrog

I started a new grow a couple of days ago and as yet have no ventilation or odour control as the tent is near a tilting window. The tent is in my bedroom as it's not practical to put it anywhere else in my 2 bedroom flat. I hardly use the living room and I could put it there, but it's just not a good idea, especially in the event of something unexpected happening e.g something happened to a family member or something in the local area and the police need to visit, so the bedroom it is. I own the property so there's no landlord who can call at anytime.

Now I have to sleep in that bedroom and I'm quite a light sleeper and can put up with a small mount of noise, but I have an extractor in the kitchen and I know I wouldn't be able to sleep with the noise.
I've looked at the Ruck temp controlled fan but from what I've read even with acoustic ducting and the fan boxed and stuffed with the foam from the acoustic ducting it's still too loud to sleep through. Would a silencer or flexible silencer help, and are these placed inside the ducting or between the CF and extractor?

I plan on having the extractor and CF in the tent, the ducting running about 8 feet up from the top of tent into the attic entrance and beyond (attic is huge but not yet boarded up) So basically I need advice on as silent as possible ventilation solution. The back of the tent is about 2ft from the bottom of the bed. I'm no electrician so wiring up a Variac is not something I'm looking to do.

Can I leave the extractor off of when I'm sleeping?

I wouldn't do that man, i tried that one before and suffered the consequences (budrot)

I've only ever used a 6" RVK150 A1 fan and could sleep through that ok (im not a heavy sleeper)

Sorry i can't give more info on fans but just wanted to say not to turn the fan off at night.....ESPECIALLY during heavy flowering.

I thought not and thanks for the advice. Would a Ruck RKW 125L be ok for a 400w HPS with a DR120 or should I go for a 150? I may eventually get a 600w ballast, but for now I'll go with the 400w as I've just shelled out for a DR120 and need to get odour and ventilation sorted in the next 5-6 weeks.

i have a dr100 with 600W inside, i use a ruck 150L & a matching rhino filter.

i sleep in the same room also.

i have a variac on my fan & turn it down, but the only noise is from the filter.
they have a Whoossh noise.

now, i have just got a new 8" rhino filter, as im thinking more surface area, so less whoosh.

from the research i have done, its better to get a bigger filter, but i guess i know for sure soon enough.

get a variac & be done with it. you can get them cheap enough on a very popular auction site.

Can't you put the extractor fan up in the loft with accoustic running down to the tent? or you could put the whole tent insde a wardrobe

Acoustic ducting makes things alot less quiet man. It's the rush of the air which makes a noise. Much more so than the fan. That's where your effort should be spent making it quiet. Check the DIY section out too. There's a few good threads about silencing.

Sorry i can't give more info on fans but just wanted to say not to turn the fan off at night.....ESPECIALLY during heavy flowering.
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why cant you turn the fans off at night , n if u did would it cause problems ?

No extraction= equals stagnant air= fungus, smaller the space the worse the problem.

With a Ruck Temp controlled fan they don't advise to use another intake so it's best to have the fan in the tent to measure the temp inside the tent.



Yeah I've been reading it's the whooshing from the CF that's the problem. I'll check out DIY like you said and thx for the help.




True, but if he use Bud Rot stop a few weeks before harvest wouldn't this not only kill existing mold but also prevent new mold from forming? Also using a strain that shows little exposure to mold might help.

Ive been growing in my bedroom for 6 years now buddy.

Also been using a dr120 for the last year,with a 5" rvk for intake & a 6" rvk for extraction.I extract into my attic above the tent (dunno if this is an option)

The intake fan sits on a chair on top of a cushion at the back of the tent with duct attached just below a window were I bring fresh air in during the summer,at this time of the year I just leave the window opened a tad and draw air from the bedroom,I run my light (600) during the day and lights off from 8pm-8am.

Heres were my fan controller comes in My censor on it is set at 24/25 degrees during the day and the fans kick in full pelt if it ever goes above this,not a prob during daytime,however at night time I turn the censor to 30 knowing it wont reach that and then turn both fans down still leaving enough speed for negitive pressure tho,and I know I have this as the tents sides are being sucked in,theres still a slight noise but can be masked with a radio on down low or another oscalating fan drowns out the noise quite well,the noise is like the hum of a fridge no big deal,I guess after 6 years Im used to it.

Heres the link to the controller its a bit pricey but a great peice of kit in my opinion theres also a pic on how to wire it up for the non electrical person,quite easy to do mate.

Enjoy your dr120.

p&q

eta: link! http://www.greenshorticulture.co.uk/Grow-r...troller-104.asp

Thanks for the advice mate but I was planning on getting the ruck temperature controlled fan. I've just shelled out for a DR120 and I'm trying o keep the cost down and the primair looks fantastic, but that alone is £100, plus there'd be an extractor an another intake fan to get.

I will be venting it into the attic, so hopefully a 5" temp controlled fan and some acoustic ducting will do the job. The sound of a humming fridge would probably be bearable for me and I'll get used to it like you said. If gets too much I could always use ear plugs, but I'm sure it won't come to that.

you mean a lot more quiet shirley?

My local grow shop has started doing acoustic fans that come in a box, the 4 inch one pulls 400 m/3 hr and they are supposed to be completely silent.


I'm quite tempted to get one of these myself.

Would be surprised if a 4inch fan pulls 400m/3 and is quiet usually the smaller the fan the more focused the air will be so there would be faster rotation and more noise.

Mind if I add a quick question, save starting another topic on similar theme.

Been looking at variacs and primairs, now I get that the primair will obviously manage itself (to some extent) when im unavailable, but can apparently balls your fans motor up, whereas the variac does a tidy job but youv got to be on it several times a day.
Which in most peoples opinion is the best, most practical, value for money in the long term, quitest when operating the fan etc etc. The evolution looks nice but is way to steep for my short arms and deep pockets.
Hope you dont think I m tryin to hijak here buddy, if you think Im off topic Ill get it shifted

Acoustic fans are worth their weight in gold, my airforce beats RVK's and Rucks hands down, even if you encase the fans in expanding foam.

£200 gets me a an 8 inch fan which is so powerful I can turn her right down, coupled with acoustic ducting an a silencer I can get it around the same level as a PC.

If you ever used a RUCK you'd know how good that really is.

Putting the fans in the attic and ducting to the tent would make a hell of a difference but the silencer is essential to cut down the wooshing if I wasn't buying an airforce or similar this would be my only option IHMO.

I've spent close to £600 on quietening my grow and I can honestly say I feel like I got value for money, you used to be able to hear it if you were within 6 feet of the door, now an airstone makes more noise than my fans and extraction does.

I don't mind at all if you add to the thread mate, the more the merrier

I've been mulling it over myself the past few days and have also been looking at the variacs, primairs, airforce silent fan, Ruck temp controlled etc etc.

I'll probably be going with the 5" Ruck temp controlled for my setup as it's the cheapest method. No need for another intake fan, just the Ruck temp controlled fan, a CF, acoustic ducting and some jubilee clips and it should be good enough tbh. The only things that bother me about the ruck is that I will either have to step into the tent or unzip the back to change the temp dial, but therre again if it runs at a constant 28c then this might not be a problem. The other thing that bothers me about the ruck temp controlled is the noise. It seems the fan will have to be boxed (which is not a problem) if it's to be in my bedroom, but the whooshing of the CF does concern me. Tutu, would a silencer or flexible silencer between the CF and the Ruck solve this?

Wiring up a variac is too advanced for my electrical skills, but the Primairs looks interesting as do the new STR voltage stepping fan controller, but looking at value for money and convenience, as long as the noise issue is sorted then the Ruck RKW's seem the way to go imo.

If you use a ruck fan, put it in the attic and put the CF in the attic blowing the air through the filter rather than sucking it, you cannot get the sound of air coming through a CF down so putting it in the attic would solve this. I would use a silencer in the the tent->ducting->ruck in attic-> CF in attic.

Airforce sell a variac based controller for ~£100 which is very good quality and I've ran 2 fans off of it no problems, it has an overide as well so you can plug the controller into a timer when it's on the fan is full power when the timer goes off the fan drops to the variac set speed (Or can be controlled with a seperate temp module).

I've eyed them steppers I reckon they'd be fine as well but since I like the quality of the airforce so much and since my misses ran off with someone else I have little to waste my money might as well be Mary Jane she's the only lady for me.

Thank for the advice Tutu, but the problem I have is there's no proper ladder to the attic and it isn't boarded up. So getting up and down there to adjust the fan periodiaclly would be a problem, which is why the Ruck RKW's appealed to me. There again I don't want to waste £200 on a setup that's going to keep me awake. So even with the fan boxed up the whoosing on the CF is still too loud?

Sorry to hear your missus ran off, you're prolly better off without her anyway. I'm single too mate, just think of the benefits like no compromising, and you can do exactly what you like

Iv used two ruck 150's for a while a three speed for cooling my novas in the summer but don't need to use it this time of year.the other ruck is a 150l single speed on a thermostatic controler which does the carbon filter and exstraction but it made a bit of noise.so as tutu said I bought a airforce fan which was not cheap but coupled with the accoustic ducting I could not believe how quiet this fan is amazing.u always want ur exstraction on buddy otherwise u will pay for it with rot.

Thanks vince so what I reallt need is an airforce, a fan controller, a cf and some ducting? What about an intake fan, do I also need one of those?

If they're that quiet I could maybe get away with getting a fan controller for now?

The more fresh air u can get the better buddy.but I started in a budbox tent and had a 600 watt light a 150 3 speed ruck and filter and just used the passive vents in the bottom.but also I put a lenghth of 6 inch ducting in one of the bottom pull cord holes and put a bend in it so didn't get any light leak for flowering.had alrite results but no where near what I get now with every aspect covered in the room.took me awhile I would buy new bits of kit as when funds allowed.

So for now Vince to get me up and running (assuming the Airforce is quiet enough for no fan controller) would this list be good enough and would I still hear the CF whooshing??

1. Airforce 5" Fan

2. 5" Acoustic Ducting

3. Rhino Filter

4. A short length of normal 6" ducting

5. 3 x Jubilee Clips

The variac doesn't have to be in the loft just because the fan is there. There will be a variac setting that gives a nice balance between low temps and low noise, tweak it every spring and autumn if you're feeling attentive.

Will it still be your house if you get busted for growing? Maybe, maybe not, afaik depends on whether you get done for cultivation or production. As a producer, you gained £x over y time which just happens to be the same amount as the equity you have in the house. Be very careful.

I'm not in it to make money off it mate, just growing some personal tbh. On my last setup it was only possible to grow 2 plants which would last 4 - 5 months., but it meant growing almost all the time. This time I have 4 plants and am also growing a mother, but eventually I plan to grow 6 plants which will last me about a year, so eventually will be just growing once a year. Once I've done this crop I'll start a 6 plant crop next June which will be ready in Sep next year then leave it till the following summer.

I'm coming round to the idea of having the fan in the attic with a speed controller in the room below, but would prefer to have it all in the tent tbh. I don't know what the best solution is atm.

It'll get you up and running but will cost plenty and is likely to make the filter whoosh even more than a normal fan, as airforce fans move more air than their ruck/rvk equivalents. Upgrading the size of filter you use would help with this but that's even more expense



Why not just start with a normal ruck/rvk and a non-humming (variac or stepped transformer based) speed controller - no point splashing out all that money on acoustic ducting and airforce fans if you don't have to.

I've heard the Airforce are very good fans, but if it's going to add more expense then maybe it's something to look at in the future.

What sort of cost would I be looking at with your suggested setup? I don't mind shelling out for the acoustic ducting as it's only £15 for 5m, which will do me plenty.

Would

Silencer Tent >Boxed Ruck RKW Temp Cont Fan Tent> Acoustic Ducting > Rhino Attic work?

I'm prepared to spend about £200 on the rig.

As ms?mj said that would probably be fine for you.I was just saying how good and quiet they where.but my circumstance maybe totaly different to yours.my new room has too be super quiet so had to go for something better which in turn cost more but it was a case of having too.The question is do u need too?. if not go for something mentioned earlier.

It needs to be silent in there for me too Vince as a grow takes about 14-16 weeks, so I'm going to need something quiet to get some sleep.

After some thinking and shopping around how about this?

Ruck 125A (modded in a box wih foam)
Acoustic Ducting
Budget Carbon Filter
STR Voltage Stepping Fan Speed controller 1.5a or would it be better to spend the extra £20 and get the Primair?

mate, the 125A will really struggle to keep the temps down with a 600w,
i tried it in the summer & ended up forking out for the 150L with the 150 x 600 rhino CF,
my tents a budbox L & i control it perfectly with a double variac controller.

There's a 400w in there atm, but I may get a 600w later on.

So would a 125a be ok for this setup?

Sounds good Deffo don't get the Primair, they are for controlling multiple fans and buzz as well - the STR one will be silent.



The 125 should be OK with a 400w, but if you intend to upgrade your lighting in the future it might be an idea to go up a fan size - that will obviously mean a higher price for the filter and ducting too though.

Yeah I think you're right, it's a good idea to get the 150 now as then it will be ready when I upgrade to 600w, and it can be turned down anyway with the STR. I can use the ventilation flaps when the light is on until I get an intake fan in the summer.

The STR will take up to two fans I believe, but is just controlled with the one fan speed controller which is not a problem for me. The Variacs looks very interesting and would have two speed contols, but I'm not going to build one, especially as I'm not really confident of hooking one up, and with electrical equipment that's a big no no. Looking at the various components needed to build a variac I might as well get a 1.5a STR at £85.

tywyn, I know you're percy but the moment they know you've got equity, it'll be like blood in the water to a shark.

I've been growing for five years Lazi without any proper odour control or ventilation so this setup is much safer than previous method. The only reason I got a tent was to increase the yield 3x or 4x so I don't have to grow as often and to cut electricity costs. I'd say the risk is considerably less.

Orrr.....

Thinking outside the box - You give the girls your bedroom, and you get the sofa?

I thought about that but the couch is not suitable for sleeping on. It's leather, but a night on that and my back is in half.

The other alternative is to get an inflatable bed for the living room or put a single bed in the spare bedroom that I use as a PC room.

maybe not help with the whoosh but consider using good quality carpet underlay as it has excellent acoustic dampening properties (saying that I haven't applied it to this type of application - but going to - the specs look good. check out duralay website. I have used dynamat car sound deadening material on the inside of a box before which works ok but it's kinda pricey compared to underlay.

As the saying goes, if you have a problem that can be fixed by spending money and you can get that money, then you don't have a problem, you have an expense.

An 8" insulated acoustic Ruck extractor fan is not far short of £200. With 8" acoustic ducting and carbon filter it's a heart stopper price. As the output is similar to a non acoustic hi power Ruck fan, it should work with a 8" to 6" reducer but 8" ducting is going to be quieter than 6" ducting. 8" ducting to a 6" filter but ratings match the fan? Not sure, probably the same noise level. That lot speed controlled via variac is, imo, going to be the quietest you can get at any price and is what I'll be using for my rebuild although I'll probably use 6" acoustic ducting at first as I already have that.