Basement setup but big ventilation problem

Yes just starting to be there is a oft above the flat as well. I'm going to have to down size the operation I think the front door of the shop is open all day so there will be fresh air in the shop area to which I was hoping it would be enough, so u think i should have a ac units as well bringing more fresh air in from outside? It's goin to be starting very soon so I need to get things started ill do a running progress with photos

ianlfc1 said:

I was dreading that this is my idea I have come up with sucking fresh air from the shop floor bear in mind the shop is open for bussiness and on the opposite side of the room I'm going to have my outlet running up through the shop and exhaling in the empty flat above and box all the ducting in so u can't see anything and also put a sort of grill over the floor for my inlet to fix to? What do you boys think might work

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firstly you can half the heat produced by splitting your flower room in 2 and having them running opposite each other.... 1 room on from 9am to 9pm and the other room running 9pm to 9am. This will also drop your power consumption, not overall power but you will only be drawing 6kw at a time.

Secondly you will have to tweak your plan. If your pulling lets say 2000cfm of cool air from the shop to the lights then pumping it upto the 3rd floor you are going to be bait for the IR Chopper because those 2000cfm of warm air has to displace 2000cfm of air from the 3rd floor. The top flat will look like a firework display to the IR camera with plumes of air firing out everywhere under pressure.

There is a solution but I aint doing your work for ya. Larger grows need more atention to detail or you will get caught.

Whats your budget, I hope you got deap pockets. You aint gonna get much change out of £20k. Don't skrimp on hardware, get the best. All accoustic ducting, silencers, top filters blah blah.

LFC...... Scouser??

ianlfc1 said:

Yes just starting to be there is a oft above the flat as well. I'm going to have to down size the operation I think the front door of the shop is open all day so there will be fresh air in the shop area to which I was hoping it would be enough, so u think i should have a ac units as well bringing more fresh air in from outside? It's goin to be starting very soon so I need to get things started ill do a running progress with photos

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Don't throw the towel in, it is doable.

Ha ha! I like ur idea of splitting the room up into two sections I'm in university doing architecture so I know all about 'U' values how heat transpires through materials and I've already got about 15k of equipment, its pretty standard practice getting acoustic ducting kingspan installation boards etc you clearly know ur stuff mate the largest one I've done b4 is 70 but I tend to do a perpetual harvest so I've got four little 30pots operation rolling in every 2-3. Weeks but as for this it's more tricky as its location plus ventilation are poor but needs must and I've just got to work it out I've thought of everything so the thing u think would work I might have already thought of it it's just it won't work I am from liverpool kid ya but the gaff isn't its out the way!!

Thanks for ur advice tho mate ok any more would be great, as for splitting the rooms in two wen one room goes off the plants smell more pungent as they sweat so how would i control the smell? maybe have another fan and filter additionally to the outlet fan an filter to purifier the air befor it goes through the outlet filter and fan? Would that work so in effect to airs being purified twice and I'd have to leave them running constantly a swell won't I mate

You need to run 2 seperate ventilation systems. 1 for the heat of the lights and 1 for room itself.

Use the 3rd floor flat just for cooling heat from lights. Run a duct for both inlet and outlet at opposite ends of the flat if you can. This will essentially be a sealed / looped system and won't need any filtration kit. Free heating for the flat and no increased pressure as 'air in' = 'air out'

Use the shop just for the general grow room heat. Same again with in / out ducting at opposite sides of the shop. You will of course need filters.

The beauty of having a split room is ya don't ever need any "lights out heaters" because the room thats on, feeds warm air to room thats off, before being vented out. Don't worry about smells as all the air will be constantly moving under negative pressure before being pumped out..... zero smell

Does that make any sense at all?

Yes mate it does thanks pal very good post, the lights I've got are only them euro lights not them air cooled hoods but I can buy them if t will make it better mine are just them adjustable wings

ianlfc1 said:

Yes mate it does thanks pal very good post, the lights I've got are only them euro lights not them air cooled hoods but I can buy them if t will make it better mine are just them adjustable wings

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You cannot do this without good hoods, they are about £120 each but the difference is huge. If you are putting them all in series, you will need many inline booster fans to keep the air moving as you will have a lot of ducting causing resistance and reducing air flow. And make sure you get the 8" ducting ones, you need to move masses of air.

MrMeanGreen is right, your going to have to keep your lights in a sealed loop system. You will definitely need some good hoods and I would split the room as recommended. Pulling cool air over your bulbs through your hoods and out of the room is going to be the answer to keeping the room cool. If you can keep the lights from heating the room up this will be best, then when setting up the A/C your not fighting the lights and conditions. I would vent the heat from the lights into a useable room when it is cool outside and vent it directly outside when it is hot. Just make sure your drawing fresh air in over your lights and not the stinky canna air and you won't even have to carbon filter it. If you can draw fresh air into your room from outside IMO it would be better than trying to run CO2 in a non sealed room but if you use a burner it might not be that bad. Definitely have a few challenges to overcome but I don't think this setup is going to be that hard to get right.
KnB

Thanks a lot for ur advice boys really appreciate it ok I'll keep u informed my progress

I'm looking for a fresh thread to ask a question and this might be a little off this point. With the weather cooling down outside my night temps are going lower than needed with the air completely refreshing every 5 minutes. Ideal for light cycle. . . . . . I've been thinking that if co2 is 394.45 ppmv (0.039445%) and o2 is 209,460 ppmv (20.946%) (Composition of dry atmosphere, by volume) ... That means there is 525 times as much o2 in the air compared to co2 . . . can I run my exhaust in theory 1/525 the time I would during light cycle? Obviously the less cooler air coming in the less work the heater will have to do.