4000 watt digital hps grow sealed room. PURPLE kush day 41

mr.smileyface

Well-Known Member
Here are some pics at day 41. Its purple kush. I took them when the lights were off and some were falling over. Look in the back you see that gap? There is a plant that completly fell on the other ones. Here is a recap. 45 plants vegged for 6 weeks under a 600watt hps. All in two gallon pots full of sunshine number 4. Fed with advanced nutes and a few others. Connessuer,synsezyme,b52,diamondnectar,pirhana,ove rdrive. phed at 6.1-6.3. Run off is 6. They drink about 2-3 times a week. feeding once a week and water the rest.
There is 4000 watts of hps digital lighting. Temps stay under 30. co2 ppm is 1800, rh is 50%-60%, space is 10x10x8. The lights are in cool tubes and about 12" away. They are hooked up to an 8inch vortex. I have a 1 ton a/c so its not 100% sealed but its good enough till i get a watercooled chiller. I have a 4 inch fan on a filter going 24/7. I have three fans stirring air. 1 oscolating, 1 wall mount and one small fan on the ground pushing air through plants. The co2 is controlled by a matador co2 controller and blue ox 4 burner. The Rh is controlled by a dehum.
Those pictures are about a week old. Im letting them go the full 8 weeks + a couple days.
By the way its day 52 tonight so ill have some harvest pictures at the end of the week.:clap:
 

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Snow Crash

Well-Known Member
I'm assuming this has been harvested? Any pictures to share from further on in life?
How do you manage the humidity without increasing your heat at this point?
 

mr.smileyface

Well-Known Member
Yea thats long gone. no further pics. No one even cared about it? haha
The humidity was controlled by a dehumidifier
 

mr.smileyface

Well-Known Member
Yea i noticed that. It wasnt on to much. just controling it. The a/c did alot of the dehuming.
Im getting a water cooled dehum soon. I run 100% sealed rooms only now. No a/c outtakes or anything. Just invested in a three fan chiller and bought silent axel fans to shunt noise and increase air flow in the room. It brings 9 Lights to 28c with co2 at 1500ppm Rh at 60% with small dehum running 24/7.
I got a bigger room now. I dont grow in the same spot more than once. everytime it gets bigger and better to.!
 

anonymuss

Well-Known Member
Here are some pics at day 41. Its purple kush. I took them when the lights were off and some were falling over. Look in the back you see that gap? There is a plant that completly fell on the other ones. Here is a recap. 45 plants vegged for 6 weeks under a 600watt hps. All in two gallon pots full of sunshine number 4. Fed with advanced nutes and a few others. Connessuer,synsezyme,b52,diamondnectar,pirhana,ove rdrive. phed at 6.1-6.3. Run off is 6. They drink about 2-3 times a week. feeding once a week and water the rest.
There is 4000 watts of hps digital lighting. Temps stay under 30. co2 ppm is 1800, rh is 50%-60%, space is 10x10x8. The lights are in cool tubes and about 12" away. They are hooked up to an 8inch vortex. I have a 1 ton a/c so its not 100% sealed but its good enough till i get a watercooled chiller. I have a 4 inch fan on a filter going 24/7. I have three fans stirring air. 1 oscolating, 1 wall mount and one small fan on the ground pushing air through plants. The co2 is controlled by a matador co2 controller and blue ox 4 burner. The Rh is controlled by a dehum.
Those pictures are about a week old. Im letting them go the full 8 weeks + a couple days.
By the way its day 52 tonight so ill have some harvest pictures at the end of the week.:clap:
fuck u for having a better life than me X D
 

Snow Crash

Well-Known Member
I have dreams of doing something about this size in a year or two once I get my methods dialed in a little better. No sense in adding CO2 until I get the genetics honed in.

The fan cooler sounds like something I should probably put more time into researching. They are basically water cooled radiators that run in the ducting right?
I figure there are a few ways of doing enclosed systems.

You can run the ventilation intake from outside, through the lights, and then exhaust right back outside. Using AC units to cool the room and dehumidify as required from the ambient heat. I always thought that'd be the system I'd wind up working with.

Another method is to build two rooms, one twice the size of the other. So like a 5x10 and a 10x10. You keep the plants and the lights in the 5x10, and then all the ventilation, CO2 enrichment, ballasts, reservoirs, and etc stuff is kept in the 10x10. You use the big room to "wash" the air and condition it to the proper temperature, humidity, and CO2ppm, and exchange from one room to another. If I had the space I'd give that a shot, but I'd need a 15x10 room and don't have one at the moment.

The inclusion of a reservoir chiller and a couple of those fan coolers would probably allow both of those systems to forgo AC units and go completely sealed. I'm sure there is an expense, especially electrically with the pumps and chiller, but in the end I bet it's about as much as an appropriate sized AC anyway.

How much control do you have over the room temperature with them?
 

mr.smileyface

Well-Known Member
I have dreams of doing something about this size in a year or two once I get my methods dialed in a little better. No sense in adding CO2 until I get the genetics honed in.

The fan cooler sounds like something I should probably put more time into researching. They are basically water cooled radiators that run in the ducting right?
I figure there are a few ways of doing enclosed systems.

You can run the ventilation intake from outside, through the lights, and then exhaust right back outside. Using AC units to cool the room and dehumidify as required from the ambient heat. I always thought that'd be the system I'd wind up working with.

Another method is to build two rooms, one twice the size of the other. So like a 5x10 and a 10x10. You keep the plants and the lights in the 5x10, and then all the ventilation, CO2 enrichment, ballasts, reservoirs, and etc stuff is kept in the 10x10. You use the big room to "wash" the air and condition it to the proper temperature, humidity, and CO2ppm, and exchange from one room to another. If I had the space I'd give that a shot, but I'd need a 15x10 room and don't have one at the moment.

The inclusion of a reservoir chiller and a couple of those fan coolers would probably allow both of those systems to forgo AC units and go completely sealed. I'm sure there is an expense, especially electrically with the pumps and chiller, but in the end I bet it's about as much as an appropriate sized AC anyway.

How much control do you have over the room temperature with them?
Yea im looking into reservoir chillers. But for now its drain to waste.
Your talking about a lung room right? I dont use that because it isnt needed. The reservoir chiller should be outside the room and so should the ballasts. That made the room drop 2 degrees C
I make sure they stay in the right temps. I run the setups before i get the plants in there to make sure its proper.
The fan chiller looks like a sub box for stereo speakers. Its about 5 feet long,2 deep 2 height. There is no ducting just covers for the fans. I bought axel fans that are so quiet you dont hear them unless your in the room.
With everything running. its stays under 30c. I have max and min temps.
Btw i dont use cooltubes anymore. just bat wings. Im telling you i have nothing leaving the room.
 

a mongo frog

Well-Known Member
hey luv the room, my girlfriend and i are doing the same thing. r your lights and room scrubbed back into your room? thats what were doing. getting a 36,000 btu a/c with 11,000 btu on stand by. do u think thats enough btus for 12 1000's ? if u look at my pics on my page thats the set up before we went sealed. any thing u can offer will be great. your just about king of the grow world.....
 

mr.smileyface

Well-Known Member
hey luv the room, my girlfriend and i are doing the same thing. r your lights and room scrubbed back into your room? thats what were doing. getting a 36,000 btu a/c with 11,000 btu on stand by. do u think thats enough btus for 12 1000's ? if u look at my pics on my page thats the set up before we went sealed. any thing u can offer will be great. your just about king of the grow world.....
Hey i will look at your pics. I dont use those shades anymore. I switched to bat wing adjustable shades. Less fans needed.
3000 btu's per light when in an aircooled shade and co2 enrichment.
4000 btu per light when co2 is being used and a in a sealed room.
I just run the charcoal filter 24/7 in the sealroom. It adds circulation.
i think your gonna need more btu's depending on the size of your room and temps outside. I highly recomend water cooled everything.
A "lung" room would be more ideal. Make sure your ballast arent in the same room.
 

Snow Crash

Well-Known Member
I was looking them up.

You can get a 1/2 horsepower chiller for about $800 and add two 50 gallon water reservoirs to it.
Add 500gph of pump and one Ice Box cooler for each 1000w system you run.

Figure... $1700 to $2000 for a 4x1000w grow to cover the cooling and doing it proper. You could spend more on reservoirs, iceboxes, pumps, and chillers if you needed to keep the place cold. $2000 is close to what you're going to spend on an equivalent AC unit.

You will still need a way of managing the heat from the chiller, so that's going to need to be kept in a separate area with the ballasts and any extra crap you can keep in there that you can ventilate safely. In your grow room you keep the CO2 levels high and just circulate the air through the ice boxes as you pull the hot air from the lights.

At that point you could probably manage a 1000w light with 1000btu worth of AC. Still have to do some dehumidifying after all. A $100 5,000BTU AC unit would be a good addition anyway.
 

mr.smileyface

Well-Known Member
I was looking them up.

You can get a 1/2 horsepower chiller for about $800 and add two 50 gallon water reservoirs to it.
Add 500gph of pump and one Ice Box cooler for each 1000w system you run.

Figure... $1700 to $2000 for a 4x1000w grow to cover the cooling and doing it proper. You could spend more on reservoirs, iceboxes, pumps, and chillers if you needed to keep the place cold. $2000 is close to what you're going to spend on an equivalent AC unit.

You will still need a way of managing the heat from the chiller, so that's going to need to be kept in a separate area with the ballasts and any extra crap you can keep in there that you can ventilate safely. In your grow room you keep the CO2 levels high and just circulate the air through the ice boxes as you pull the hot air from the lights.

At that point you could probably manage a 1000w light with 1000btu worth of AC. Still have to do some dehumidifying after all. A $100 5,000BTU AC unit would be a good addition anyway.
I have a new setup. One big fan chiller. three fans. My temps are holding so i dont need the water chiller. In summer time when i need it i will get it.
Iceboxes are a waste of money. Id rather get a chiller to do the whole room.
My temps are holding at 28 and when co2 hits in goes up to 31. After the co2 is off the chiller manages to pull the temps back down to acceptable range.
My lights are 1 foot away from the canopy with no signs of heatstress at all.
When i talk about temps, i mean at the conopy level. NOT in the shade.. In the shade its doing 26.
 

mr.smileyface

Well-Known Member
I was looking them up.


Figure... $1700 to $2000 for a 4x1000w grow to cover the cooling and doing it proper. You could spend more on reservoirs, iceboxes, pumps, and chillers if you needed to keep the place cold. $2000 is close to what you're going to spend on an equivalent AC unit.
I could get a 5ton a/c watercooled for that price..
Instead i bought a fan chiller that can do 10 tens with ease. I paid 700 for it.
I could get two of them for less than 2000. that could do a 30 light op with the help of an outtake.
If your gonna spend 2 grand. Go buy a co2 blue ox burner and a two fan chiller. Do 6 lights in a sealedroom. Buy normal 20 dollar bat wing shades. 6 used ballast and new bulbs. Its gonna cost about 3000 grand includes clones and dirt. You will make how much? even at a pound a light. 6 pounds.
Its mostly about finding the right place.
 

BCBuddy420

Well-Known Member
I havent decided yet. i think im just gonna show harvest pics.
PM me some currents, love to see your room. I'm just headin up to staple the floor down and install an osc. fan then I'm going to place the bushes in for flowering...fuckin bout time
, I learned alot from having to save somebody elses waste and revert from flowering, now I got these bitches under my spell :lol:
 
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