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Apt. grow: 2x600/2x1000W: exhaust & a few other Qs

space.pussy

New member
Dear icmaggers,
I've been wrecking my brain about this for way too long and need another perspective.

A little background: I'm not a complete noob, I've grown 5 rounds under a 600W in a growtent in an apartment where I live with good results, but it's becoming an issue with my g/f. Nothing serious, she won't tell anyone or anything like that, but it's making our relationship a little lopsided and she's using it to get the upper hand.

So I'm thinking of moving my hobbies to a different -- rented -- apartment (where I won't live). I have a friend who's facing the same issue so we decided to join forces to make it more economical. A lot of you will tell me that I should do it alone, rather than with a partner, but this is not a commercial setup and the fruit will be consumed just by us, no selling whatsoever. Also, the growing laws in this european country are fairly lenient (not so if you sell). That being said, it'd be much preferable if the landlord didn't know. Even if they found out, it is unlikely, that a little boost in rent wouldn't convince them to look the other way, and even if they told the police, -- worst case scenario -- it'd end with a probation (we're good citizens with no criminal records and growing 5 plants per person is considered an offense, not a felony).

We're thinking this kind of setup: Homebox XXL (120x240x200cm - 4'x8'x6'5"), 2x600W (with the option to upgrade to 2x1000W later), 2x DIY NFT system with a 90l (24gal.) res each, 16 plants each. That's pushing the legal boundaries, but without selling, it would still end with probation. We can't use CO2 or air-cooled hoods or anything fancy like that. Technical aspects of the grow I'm not worried about though, because I've been running the same kind of system for a while and this would be just doubling the wattage, so not much of a step-up.

Now. Ventilation will be one of the most difficult things to set up, mainly because of two things:
  1. the apt. we're thinking of using is on an elevated ground floor (window's about 4-5m or 12-15ft. above the ground), which is a little higher up, but still not safe to leave the window cracked open.
  2. It's oriented into an atrium kinda thing which is deserted (weeds, bushes, high grass and shit), but can nevertheless be accessed by other tenants via a door from the common corridor. It doesn't seem like anyone would want to go there, but not taking any chances.

So how to get rid of the exhaust air then?
There's two options I have in mind, but both have their pros and cons:
1) drill a hole through the wall to the outside and cover it with a vent cover.
Most obvious cons:
- Core-drilling a big-ass hole into a rented apt. wall doesn't seem like such a grand idea.
- If anybody were to go to the deserted atrium, they might notice the whooshing sound of air coming from an apt. with blinds always closed -- suspicious as fuck.
Pros:
- Ducting would be very short and light cooling plenty efficient for 2x600 or even 2x1000 (no grows over the summer)
- Can't think of any other pros really.

2) Old buildings like this one have a window in their bathrooms leading to a common shaft with plumbing and shit, so we could use that as an exhaust (scrubbed air, of course).
Cons:
- longer ducts (10m or about 30ft.) with at least 2 or 3 90deg. turns = need a more powerful fan = more noise and power.
- The biggest problem with that though is the whooshing sound of air into the common shaft used by other tenants.
- Ducting would need to go through the tiny room that is right behind the apt. door (from the inside of course). So if I'm leaving the apt., there's a possibility of the ducting being noticed by some of the neighbors passing through the common corridor.

As you can see, neither of these solutions is very good. Am I overlooking something here? How do other apt. growers solve this venting issue (sealed room with AC/CO2 unfortunately isn't an option for us)?

So why did we pick that kind of apartment? Basically, because it's not in such a good shape (no furniture or any appliances we -- the tenants -- could damage; no near-future remodeling is planned), all bills would be made in the tenant's name and paid on time, so there's very little reason for the owner to come by. There's new water-lines and we'd wire the place with proper electrical, so leaks or electricity wouldn't be a problem. On more note on the electricity, this being a EU country, it's all 230V and as far as I know (have family in a major electrical company), energy usage on this scale (2x600W / 2x1000W + fans) is not suspicious even if it is in an apartment. Another reason is a good location: it's fairly close to my apt, so I can visit everyday or every other day when walking the dog (it's about a 30 min. walk).

OK, moving on. We haven't decided on the apartment because of the ventilation issue yet, so plans can change. If I can't figure out a reasonably feasible solution, we'll have to find a better apt. What do you suggest? Doable? Too risky?

Any suggestions are most welcome.
 
R

RedRain

dont vent your air...sealed room is the only way to go. use a water cooled heat exchanger to cool your room. do you have free water? find out if it is metered or not

it sounds like you are stuck and cannot vent. vibration and noise is a big issue as well. there are normally yearly fire inspections as well.
 

St3ve

Member
why isn't ac/co2 an option?

As far as I can see, its really the only way to go for you. Not to mention it will be more productive.
 

space.pussy

New member
why isn't ac/co2 an option?

As far as I can see, its really the only way to go for you. Not to mention it will be more productive.
It's a budget issue. Can't afford an AC / CO2 controller at the moment. I'd love the option, of course. And then -- even if we had enough money for it, we'd have to use a portable AC, since installing a mini-split or a window unit wouldn't be possible (doesn't get very hot in summer here, so it'd be crazily suspicious).

If we can't solve this ventilation issue without using an AC, we'll have to find another apartment.

dont vent your air...sealed room is the only way to go. use a water cooled heat exchanger to cool your room. do you have free water? find out if it is metered or not

it sounds like you are stuck and cannot vent. vibration and noise is a big issue as well.

The apartment has got a water meter, so no free water there. I've never used a heat exchanger before, so I have no idea about the efficiency of it, but I'm going to look into it.

Another thing that comes to my mind is, that one of us would be there every day or every other day at the most, so if we left the bathroom window leading to the shaft open (stack effect), there would probably be sufficient air exchange meaning sufficient CO2 & O2 for the plants.

there are normally yearly fire inspections as well.
No fire inspections here, but the water, electric & gas meters are inside the apartment, so there would be at least 1 visit per year by a utility person. Those visits are usually announced anywhere between 2 weeks to a month ahead. Meter checks aren't much of a worry, it's much worse with landlord visits.

We plan to fix the place up, invite them over so that they see that everything's in order (so that we can deduct material costs like paint from rent) and once they see everything's in order, I don't think there would be another visit for quite a long time, possibly a year (we'll probably only stay there until summer when it gets too hot to cool without an AC) and then move somewhere else in fall or even later, depending on how long the fruit is gonna last. We could get 2 rounds until may and that would supply us for a fairly long time.

I'd be interested to hear from others how they go about finding and renting apartments (or even houses) suitable for our hobby. What's your criteria, and what's a no-no. Not planing to rent a house anytime soon (no resources), but perhaps one day...
 

Bonavendura

Member
my 2 cents ,
Exaust in another room or in the toilet ,
close the door of the room that contains the tent ,
leave bathrooms window or some window open.

You are just going to throw some heat in your bathroom.
 

growshopfrank

Well-known member
Veteran
Keep looking, find a more suitable apartment. an absentee landlord (one that lives far away) is a big plus when renting. Avoid management companies because if you get caught they will likely charge you exorbitant fees for cleanup
 

fearlessferret

New member
What do you think of putting up lace curtains and sending the exhaust air out the window through a dryer vent? You won't be the weirdo whose shades are always drawn, you'll have nice respectable curtains that no one can see through clearly, and anyone who happens to hear the air whooshing out the dryer vent will assume you're doing your laundry.
 

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