First grow well underway, HELP and a few tips please from the PRO'S !!

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"All four vents at bottom of tent open 24/7, extractor fan removing air from top of tent routed toward vent area so there is a loop system going, as long as milk crates are above vent area, is that gonna help drastically?"

Perfect.

- The low pressure system above the canopy - created by the outlet fan - will draw the air from below the crates up through the leaves, the stoma (breathing) are under the leaves.

- Using larger diameter ducting than your fan's flanges will reduce air drag and increase flow. Reducers can be purchased at hardware stores or online.

- If possible extend your outlet duct to the middle of the tent to even the low pressure system across the tent.

- Likewise airflow would improve with one or two of the 4 inlet ducts extended to the middle of the tent, to change the airflow from the sides to the middle. You could poke holes in the ducting to release air across the floor.

- This constant flow of fresh CO2 rich air passing over the stoma will give you a similar effect as having a CO2 tank in your tent.

- Be sure to vent the tent's air to your living area, not just the grow room. We want to take CO2 rich air from your living area and release it from the ducting under your air floor; O2 rich air from your grow tent pumped into your living area. Symbiotic.


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Q: "is that gonna help drastically?"

A:
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thjanks again man,

Hobbes said:

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"All four vents at bottom of tent open 24/7, extractor fan removing air from top of tent routed toward vent area so there is a loop system going, as long as milk crates are above vent area, is that gonna help drastically?"

Perfect.

- The low pressure system above the canopy - created by the outlet fan - will draw the air from below the crates up through the leaves, the stoma (breathing) are under the leaves.

- Using larger diameter ducting than your fan's flanges will reduce air drag and increase flow. Reducers can be purchased at hardware stores or online.

- If possible extend your outlet duct to the middle of the tent to even the low pressure system across the tent.

I was rather thinking of literally pointing external air duct down toward the vent, or are you saying, literally feed it back inside the tent through one on the inlet holes?

- Likewise airflow would improve with one or two of the 4 inlet ducts extended to the middle of the tent, to change the airflow from the sides to the middle. You could poke holes in the ducting to release air across the floor.

- This constant flow of fresh CO2 rich air passing over the stoma will give you a similar effect as having a CO2 tank in your tent.

- Be sure to vent the tent's air to your living area, not just the grow room. We want to take CO2 rich air from your living area and release it from the ducting under your air floor; O2 rich air from your grow tent pumped into your living area. Symbiotic.

Dude, I cannot butcher my house, I smoke in living room, and so that is a no no. it is in room at top of stairs, so if I leave door open there is enough fresh air coming in from downstairs etc. Do I now need more ducting, with an adapter to make 2 sets from one, again, I thought i could get away with it just pointing down toward the vent?

Also, at the moment my lights on at 9am to 9pm, because air vent is open at bottom, light can get in, question is, would it make a difference to the last 2 hours of darkness as the room which the tent is in is not blacked out, so when sunrise the room is light, with vent open light gets in, so I presume I am better going 6pm-6am or 7am/7pm so lights go on with sunrise, what do you think b?
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Q: "is that gonna help drastically?"

A:
.....

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Click to expand...

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"I was rather thinking of literally pointing external air duct down toward the vent, or are you saying, literally feed it back inside the tent through one on the inlet holes?"

Feeding the tents hot, O2 rich, exhaust air will produce poor results. Looping the ventilation system will cook the plants from the lights heat build up and reduce the growth we want from the living areas CO2.

For the system to work properly we must exhaust the tents air to either the living area (or basement/attic) in the winter or outdoors in the summer; and draw in fresh CO2 rich air from the living area.

It is possible to do this without cutting holes in your house.

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- Be sure to vent the tent's air to your living area, not just the grow room. We want to take CO2 rich air from your living area and release it from the ducting under your air floor; O2 rich air from your grow tent pumped into your living area. Symbiotic.


"Dude, I cannot butcher my house, I smoke in living room, and so that is a no no. it is in room at top of stairs, so if I leave door open there is enough fresh air coming in from downstairs etc. Do I now need more ducting, with an adapter to make 2 sets from one, again, I thought i could get away with it just pointing down toward the vent?"

You can get around the ventilation and heat problems, without cutting up your house, by using two sheets of heavy black out plastic (I like hay bailing plastic if you live in the country) as a light lock door (leave your wooden door open or take it off) and building light proof vents for your air inlet and outlets.

The light proof vents are simple to make with 1/2" diameter pvc, a few fittings, duct tape and a saw. No glue. If you want to go this route I can make a light proof vent diagram in sketch up and post it here.

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"Also, at the moment my lights on at 9am to 9pm, because air vent is open at bottom, light can get in, question is, would it make a difference to the last 2 hours of darkness as the room which the tent is in is not blacked out, so when sunrise the room is light, with vent open light gets in, so I presume I am better going 6pm-6am"

2 hours of pre dawn light will take the plant out of budding. This chart isn't exactly on point but it gives us an idea of what happens during the dark period when light is introduced.



6pm to 6am might yield less expensive electricity rates, be cooler, and give you more hours of lights on garden time when you are home.

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None of your obstacles are show stoppers, we just have to do things differently. It's the same effort and expense to build a system to get the results you want as to build an inefficient system.



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Dude, I meant that i turn back start time in am, on from 9am to 7am, that way light issue is sorted, i want everything on normal timing as they started outside! Anyways, I have now transplanted all 3 to bigger pots (11L), bent main stems 90 deg's down, anchored them all, 2 up 1 down to maximise amount of potential cola's, so exciting.............without you I would be nothing, now I am learning so much all because of you my man, really exciting!!! I could not get milk bottle crates, so have made something else which i would like your opinion on.
There is a tray on floor, then crate, bottom on the floor, so there all just holes in all sides and no top, then a metal shelf/rack balancing on top, then all 3 positioned as centrally as possible, all three anchored together in case of balance issues, with as many flower sites available for light.......tried to create the best air floor I could..........the vents are below the height of the crate. After the 90 degree bend on my main, question is, after a few days, can i then bend it again 45 deg left or right, cos at the moment the main stem is well overlapping the size of the pot, (11L) so can I intertwine around the pot, I want it to look as much like yours as I can, do I really need the tomato cage, at the mo I have screwed 4 screws in all corners of all pots to act as holding posts, - Temps are fine, 74 on, about 65/68 off, ph sorted in my water now, water ph was too high but now levelled out..... I now have desk fan at bottom, blowing from bottom up to leaves etc and filter/extractor fan on top, exit pipe can only be in this room, cannot do attic, I cannot have any ducting coming out of the room, nor can i drill any holes in ceilings, so at the moment, the exit duct pipe is sat on top of the tent, pointing towards window, which is open, through a closed window curtain. Room is left ajar or closed with door as I have no smell issues yet due to rhino filter. I have two vents open at bottom, any other advise or things I need to get? I was thinking about some clip on fans, to go on the side, to build up the new budding sites, will this help to thicken up the branches that are growing and soon to appear, as I am not sure that the desk fan is penetrating high enough for those stems, it is on the bottom pointing up, as much as I can get it, but main top part is kind of hitting the pots, as opposed to fanning the branches...........again, thanks bro, will keep you fully updated, cannot wait, roll on 8 weeks !!! ez

diagram would be wicked thanks, I will draw you one of my suggested options, showing you my room etc, my phone camera, sorry iphone 4!!! pictures are coming out shite, due to flickering on image due to lighting............