8x8x5 ventilation

[Blender]

What's up guys, I'm constructing a closet grow, and I would like to set up ventilation for the room without cutting holes in walls and the door. Trying to stay discreet nomesain? the room is 8x5x8 or 320 cubic ft. Should I get a squirrel cage blower to exhaust air in or out? I am probably going to use a 600w HPS or 2 400w 1 hps and 1 mh. Any suggestions?

Also going to be creating a Highkea Growdrobe of slightly smaller dimensions but similar for the moms.

 

[Jnugg]

I'd go with 2x 1000w HPS for a 40 square foot area.One 600w HPS would only be 15 watts per square foot or 2250 lumens per square foot,not even close to enough light and those measurements are on paper because in reality a 600w HPS covers a 3' x 3' area perfectly and up to a 4' x 4' area max.

I'd get an inline centrifugal (not a squirell cage blower) to soley air-cool the two 1000w HPS lights (6" should do it) and a seperate 6" inline centrifugal for ventilation and odor control.

Or you could try vertical.

 

[the gnome]

you have room wise for 2-1000w'ers...using a 4x7 tight on the sides tho but doable for 1000w's
600s give you more free walk space
air cooled hoods and use an inline.
what do you have to keep it cool?
don't know how you plan on intake and exhausting without holes unless you have a window in this room?
or lots of duct going in and out of the entry.

do you need odor control?
i have 2-100w cooltubes, a 6" 304cfm inline with a can 50 scrubber at the head of the system.
no odor and heat goes out the window.
and i rely on central heat and air for cooling in warmer months

 

[messn'n'gommin']

What's up guys, I'm constructing a closet grow, and I would like to set up ventilation for the room without cutting holes in walls and the door. Trying to stay discreet nomesain? the room is 8x5x8 or 320 cubic ft. Should I get a squirrel cage blower to exhaust air in or out? I am probably going to use a 600w HPS or 2 400w 1 hps and 1 mh. Any suggestions?

Also going to be creating a Highkea Growdrobe of slightly smaller dimensions but similar for the moms.

Don't mean to be a smart-a$$, but how discreet is it going to be when your girls are stinking up your whole house? Ventilation should be your first priority. I can understand you not wanting to cut any holes, but there are ways around the obvious. A throw-away door with an intake grill covering a light baffle to replace the existing door, is one way for an intake port. What room is on the other side of the back wall of the closet? Can another intake grill be placed to cover an exhaust port in that room to dump filtered hot air?

If the need should arise down the road, repairing holes in drywall isn't all that troublesome or technical or expensive. All I'm saying is that there is more than one way to skin a cat, but you're going to have to cut at least two holes somewhere!

I suppose you don't have to go with big lights, as all you have to do is try not to cover any more area than what the light can do. A 2' to 3'x5' area may be all you need. Two 400w lamps or one 600w would cover that size area fairly well. Even then, there is always vert!

Now this is only my suggestion, so please feel free to take it with a large grain of salt, But if it were me, I would use two 400w magnetic core and coil HPS ballasts. You can use the Phillps CMH lamps in the hps ballasts and they are superior to MH for veg and they last longer, too. Also, if you don't use them for flowering you don't have to swap out ballasts. The caveat is that the CMH lamps don't play well with e-ballasts!

 

[Blender]

Don't mean to be a smart-a$$, but how discreet is it going to be when your girls are stinking up your whole house? Ventilation should be your first priority. I can understand you not wanting to cut any holes, but there are ways around the obvious. A throw-away door with an intake grill covering a light baffle to replace the existing door, is one way for an intake port. What room is on the other side of the back wall of the closet? Can another intake grill be placed to cover an exhaust port in that room to dump filtered hot air?

If the need should arise down the road, repairing holes in drywall isn't all that troublesome or technical or expensive. All I'm saying is that there is more than one way to skin a cat, but you're going to have to cut at least two holes somewhere!

I suppose you don't have to go with big lights, as all you have to do is try not to cover any more area than what the light can do. A 2' to 3'x5' area may be all you need. Two 400w lamps or one 600w would cover that size area fairly well. Even then, there is always vert!

Now this is only my suggestion, so please feel free to take it with a large grain of salt, But if it were me, I would use two 400w magnetic core and coil HPS ballasts. You can use the Phillps CMH lamps in the hps ballasts and they are superior to MH for veg and they last longer, too. Also, if you don't use them for flowering you don't have to swap out ballasts. The caveat is that the CMH lamps don't play well with e-ballasts!

I have been looking into CMH actually, and was wondering if you have tried their HPS Retro white? The HPS with extra blue? I'm all for going with the under dog product that turns out better than the pre-mix watered down stuff.

I do actually intend on doing a vertical stadium style set up

What is a cost efficient way to get the lamps cooled in a vertical setup? I've heard of getting a quartz cut glass tube and then run ducting through it but this guy did that in a Barrel of green grow in a vacuum for a secret grow box contest. I would like to follow the winning recipe haha.

Initially the reason why I leaned towards the 600 watt lights is because I've seen photos of Heath Robinson tree grows where he yielded like 70 plus ounces off of 1 tree he grew with 3 hps bulbs.
Let's say I get the 1000 watt vertical scrog going stadium style hydro I would need how much cfm in a 320 cubic foot area or 8x5x8? What's a solid brand of air deodorizers for the ventilation?
I like setting this up, reminds me of legos when younger

 

[Blender]

you have room wise for 2-1000w'ers...using a 4x7 tight on the sides tho but doable for 1000w's
600s give you more free walk space
air cooled hoods and use an inline.
what do you have to keep it cool?
don't know how you plan on intake and exhausting without holes unless you have a window in this room?
or lots of duct going in and out of the entry.

do you need odor control?
i have 2-100w cooltubes, a 6" 304cfm inline with a can 50 scrubber at the head of the system.
no odor and heat goes out the window.
and i rely on central heat and air for cooling in warmer months

I don't mind keeping the lights closer to the plants because I'll be around them a lot so I see the efficiency with the 600s, but I see so many people here insisting on 1000s...so which 1000 should I pick? I've heard the 600hps/400mh in one 1000w bulb is killer. I plan to burn these 1000 watters vertically though, you think it's doable? Cool tube for the 1000, but do I have cold or cool air running through that tube or just ambient air? Think it's worth it to invest in a dimmer ballast?
What do you recommend for odor control? Also, what do you recommend for filtering air going into the room? Lives with teh dogzz...Thanks for stopping in as well man

 

[Blender]

I'd go with 2x 1000w HPS for a 40 square foot area.One 600w HPS would only be 15 watts per square foot or 2250 lumens per square foot,not even close to enough light and those measurements are on paper because in reality a 600w HPS covers a 3' x 3' area perfectly and up to a 4' x 4' area max.

I'd get an inline centrifugal (not a squirell cage blower) to soley air-cool the two 1000w HPS lights (6" should do it) and a seperate 6" inline centrifugal for ventilation and odor control.

Or you could try vertical.

I wish to go the vertical route, but is vertical hydro possible with 1000 in a cool tube system? I want to do a vertical scrog around the light with a steep stadium style type of setup. I'm kinda working in a tight space

how often should a complete air change happen in a room this small? 5 minutes or so since humidity can build quick or something? Also what's a crafty way to hide a reservoir? Any nutes that do well with hydroton? I've heard great things about Iguana Juice Bloom as a base, as it pretty much follows LUCAS formula as well as being Organic. Any under rated nutes/supplements good for what I'm describing? Sensi Grow (not bloom) A&B for vegging right?

Ever since they stopped making hydroton I picked up 50L so I can tell my kids one day "I grew in the shit that was round and tough to clean after harvest thank ya very much!"

 

[messn'n'gommin']

I have been looking into CMH actually, and was wondering if you have tried their HPS Retro white? The HPS with extra blue? I'm all for going with the under dog product that turns out better than the pre-mix watered down stuff. View Image

In a 2'x4' closet, I use two 250w Phillips Retrowhite CMH's and love them. I use them through veg and flower. But, they have their limitations:

Pro:
1. A much better veg bulb, has about four times the life, and more blue than standard MH.
2. Interchangeable with HPS magnetic core and coil ballasts (250w and 400w lamps only) of the same ANSI designation and more red than standard HPS lamps.
3. Although a subjective opinion, most (including me) feel that it makes for "stonier" weed.

Con:
1. Costs about three times a standard MH lamp.
2. Comes in only 400w or less. (150w and less require Pulse Start MH magnetic core and coil ballasts)
3. A major gripe from experienced growers is that it makes for "leafier" plants during flower and a reduced final weight.

After all that, fluoro's and LED's don't get nearly as hot and do a good to excellent job for veg. Also, HPS e-ballasts are plentiful and relatively cheap.

I do actually intend on doing a vertical stadium style set upView Image What is a cost efficient way to get the lamps cooled in a vertical setup? I've heard of getting a quartz cut glass tube and then run ducting through it but this guy did that in a Barrel of green grow in a vacuum for a secret grow box contest. I would like to follow the winning recipe haha. View Image

I have never done a vert grow, but will at some point. So, I couldn't say for certain.

Your thinking of "following a winning recipe" means, ventilation and odor control! But, it also opens up the option of a small cab grow (flat, stadium, or vert) and will be a bit easier to manage the two.

Initially the reason why I leaned towards the 600 watt lights is because I've seen photos of Heath Robinson tree grows where he yielded like 70 plus ounces off of 1 tree he grew with 3 hps bulbs.
Let's say I get the 1000 watt vertical scrog going stadium style hydro I would need how much cfm in a 320 cubic foot area or 8x5x8? What's a solid brand of air deodorizers for the ventilation?
I like setting this up, reminds me of legos when younger View Image

For personal use, I suggest you figure out how much you require per month and multiply by four (about the amount of time from soak to harvest). Then figure on (for a beginner) about 1/4 gram per watt dry weight.

Example:
1/2 oz. per month x four months = 2 oz's (one oz. = 28.35 grams)
1/4 gram per watt = 250w lamp (rounded up to next higher wattage lamp)
50w/sq ft (minimum) = 5 sq ft of grow space

As your skills get better and your gram per watt goes up, these numbers become more and more irrelevant.

I won't recommend any kind of deodorizer for any grow. Case in point. A woman entered an elevator to get to her apartment after grocery shopping, when she cut a particularly smelly fart. So, she pulled a can of deodorizer from her shopping bag and sprayed a good amount. Halfway up, the elevator stopped, a man got on, sniffed the air, then said, "Jeez, somebody must have crapped a Christmas tree!" Moral of the story, deodorizers are fools gold! They will not do the job. You need serious filtration coupled with heat management.

One of the best threads on the net:
“Ventilation 101,” by redgreenry
https://www.icmag.com/ic/showthread.php?t=112862

Rather than eyeing the end result, eye the little things necessary to get to the results.

"A journey of 1000 miles begins with a single step. A tree larger than a man can embrace starts as a sapling. A dam large enough to hold back a river, begins with a clod of earth." -Lao Tse

 

[Hydro-Soil]

For personal use, I suggest you figure out how much you require per month and multiply by four (about the amount of time from soak to harvest). Then figure on (for a beginner) about 1/4 gram per watt dry weight.

Example:
1/2 oz. per month x four months = 2 oz's (one oz. = 28.35 grams)
1/4 gram per watt = 250w lamp (rounded up to next higher wattage lamp)
50w/sq ft (minimum) = 5 sq ft of grow space

As your skills get better and your gram per watt goes up, these numbers become more and more irrelevant.

Yeah... that's great advice, except I recommend taking the amount you use now and tripling it before multiplying by 4.

I use a LOT more cannabis when it's good stuff I've grown myself. Oooohhhhhhhhh Myyyyyyyy Goooooooodness! LOL

Stay Safe!

 

[messn'n'gommin']

Yeah... that's great advice, except I recommend taking the amount you use now and tripling it before multiplying by 4.

I use a LOT more cannabis when it's good stuff I've grown myself. Oooohhhhhhhhh Myyyyyyyy Goooooooodness! LOL

Stay Safe!

It was just a rough guide and an example to go by for those of us who haven't grown much of anything before now and not really sure what to expect. So, I tried to keep it to real experience.

Ya! I found myself smoking a LOT more after growing my own. But, now I grow even more than I need, so I only grow once or twice (at most) a year, depending.

Peace!

 

[Hydro-Soil]

It was just a rough guide and an example to go by for those of us who haven't grown much of anything before now and not really sure what to expect. So, I tried to keep it to real experience.

Not knocking it... it's a good guide.



Stay Safe!

 

[Blender]

In a 2'x4' closet, I use two 250w Phillips Retrowhite CMH's and love them. I use them through veg and flower. But, they have their limitations:

Pro:
1. A much better veg bulb, has about four times the life, and more blue than standard MH.
2. Interchangeable with HPS magnetic core and coil ballasts (250w and 400w lamps only) of the same ANSI designation and more red than standard HPS lamps.
3. Although a subjective opinion, most (including me) feel that it makes for "stonier" weed.

Con:
1. Costs about three times a standard MH lamp.
2. Comes in only 400w or less. (150w and less require Pulse Start MH magnetic core and coil ballasts)
3. A major gripe from experienced growers is that it makes for "leafier" plants during flower and a reduced final weight.

After all that, fluoro's and LED's don't get nearly as hot and do a good to excellent job for veg. Also, HPS e-ballasts are plentiful and relatively cheap.

I have never done a vert grow, but will at some point. So, I couldn't say for certain.

Your thinking of "following a winning recipe" means, ventilation and odor control! But, it also opens up the option of a small cab grow (flat, stadium, or vert) and will be a bit easier to manage the two.

For personal use, I suggest you figure out how much you require per month and multiply by four (about the amount of time from soak to harvest). Then figure on (for a beginner) about 1/4 gram per watt dry weight.

Example:
1/2 oz. per month x four months = 2 oz's (one oz. = 28.35 grams)
1/4 gram per watt = 250w lamp (rounded up to next higher wattage lamp)
50w/sq ft (minimum) = 5 sq ft of grow space

As your skills get better and your gram per watt goes up, these numbers become more and more irrelevant.

I won't recommend any kind of deodorizer for any grow. Case in point. A woman entered an elevator to get to her apartment after grocery shopping, when she cut a particularly smelly fart. So, she pulled a can of deodorizer from her shopping bag and sprayed a good amount. Halfway up, the elevator stopped, a man got on, sniffed the air, then said, "Jeez, somebody must have crapped a Christmas tree!" Moral of the story, deodorizers are fools gold! They will not do the job. You need serious filtration coupled with heat management.

One of the best threads on the net:
“Ventilation 101,” by redgreenry
https://www.icmag.com/ic/showthread.php?t=112862

Rather than eyeing the end result, eye the little things necessary to get to the results.

"A journey of 1000 miles begins with a single step. A tree larger than a man can embrace starts as a sapling. A dam large enough to hold back a river, begins with a clod of earth." -Lao Tse

Thanks and definitely cheers man, thanks for all the good info on this. I will definitely read up on the Ventilation bit.