Advice Needed - 8x4 Grow Room

thc&me

thc&me

Active Member
Having a separate area for vegetating plants and flowering plants is definitely advantageous. In one area (3x4), I would start my clones and seedlings using soft florescent lighting. T5 or even inexpensive T8 bulbs work great for this purpose as they can be kept close to the plant without burning the new shoots. Once the roots are developed enough, you can use that same area to begin vegetating (18/6) the young plants under a 600W Metal Halide bulb. Keep this area between 26C-28C with humidity between 60-70% for best results.
The second area (5 x 4), can be used exclusively to flower your plants under a single1000W HPS bulb or 2x 600W HPS for better coverage. It's best to keep this area cooler (26C or less) and drier (40%-50%). Because this section of your grow room needs 12 hours of absolute darkness each day, it is extremely important that there is no light seepage from your vegetation area. A week before the onset of 12/12, take cuttings from your plants to replenish your vegetation area with new clones. Flowering times differ between strains, but using this perpetual growth cycle could potentially give you a harvest every 7-8 weeks.
 
thc&me

thc&me

Active Member
Gastanker said:
Rotating your plants like newbuds suggests is a great idea. In addition to a monthly harvest you end up with better spacing in your tent - as your older batch is filling out it is able to take up more than half of the 4x8 while the smaller newer plants still have plenty of room as well. Great way for optimizing your space.[/QUOTE

I personally don't like having plants of varying heights under the same light. It's better to have an even canopy to maximize lumen.
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Gastanker

Gastanker

Well-Known Member
thc&me said:
Gastanker said:
Rotating your plants like newbuds suggests is a great idea. In addition to a monthly harvest you end up with better spacing in your tent - as your older batch is filling out it is able to take up more than half of the 4x8 while the smaller newer plants still have plenty of room as well. Great way for optimizing your space.[/QUOTE

I personally don't like having plants of varying heights under the same light. It's better to have an even canopy to maximize lumen.
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If he had two lights he could vary the heights of them. Imo when in a tent (super close reflective surfaces) and using a large rectangular hood a 1kW light will fairly easily cover a 4x5' area leaving the second light responsible for a 4x3' area.

Actually you could probably get away with great results running a 600w over your younger half and a 1kW over your more mature half.

I agree with not wanting uneven canopies under the same light but with two lights this is more equivalent to having a two separate tables each at different stages - two separate canopies for the most part.
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H

HellaStoned

Member
Thanks you all for the quick responses/advice.

For the seedling/cutting room, is it necessary to have vents, reflection sheets, etc or would a shelf in a clean closet with a fan and the florescent lights be enough? What I'm about to ask is different from my original question but I'm confused as to how the ventilation is supposed to work and how that correlates with the lighting. Can someone explain this for me?
 
Gastanker

Gastanker

Well-Known Member
HellaStoned said:
Thanks you all for the quick responses/advice.

For the seedling/cutting room, is it necessary to have vents, reflection sheets, etc or would a shelf in a clean closet with a fan and the florescent lights be enough? What I'm about to ask is different from my original question but I'm confused as to how the ventilation is supposed to work and how that correlates with the lighting. Can someone explain this for me?
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The closet is fine for seedlings and no ventilation is required.

For your main grow ventilation depends on the set-up, room, tents, lights, hoods...

Preferably you would pull through a carbon filter, then through your lights and into the fan, and then push the air through ducting out of your enclosure. This way all air that enters your hood is filtered of particulates that can dirty it, your light is cooled, and all hot scentless humid air is removed from the grow area.

Here is an example -



See how the air goes through the filter, through my hood, and out of the tent. My fan happens to be outside but it really wouldn't matter if your was inside.
 
N

newbudz420

Active Member
i personally think that u should always push threw ur light and not pull that being said my setup goes filter---->fan--->light 1--->light 2--->out
 
H

HellaStoned

Member
I don't understand.

Starting from the window to the lights, is it c/filter, exhaust fan, ducting to the lights, then ducting to connect the lights, and then the inline fan? Where should the fresh air come from? For 1000s, what size ducting and fans should I check out?
 
Endur0xX

Endur0xX

Well-Known Member
The air comes from a hole at the bottom of your room that is at least as big as your exhaust... and hopefully you can get the air from outside and bring it all the way to that bottom hole, no fan needed if your room is well sealed! hope it helps
 
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