1000w hps/mh grow room advice

CrudeDude

Well-Known Member
Ok so I’ll keep this fairly short for the non readers here.
I’ve got a 1000w setup coming. A friend ordered everything but has since decided not to use it. Gears never been used. Here’s a few specs:
1000w hps/mh - no cool tube
6” 2500cfm exhaust fan
Dutch pro nuets A/B and some other extras. All DP brand
Fox farm soil I believe but may go down to local garden and grab some organic with a batch of compost tea
List really goes on.... starter plugs. 10 femmed beans 2 strains. Unknown currently by me. Meters, ratchets, ph updown, T5 w humidity dome etc. the guy literally orederd a $1000 worth of stuff and has never used it. Even down to panda film. So anyway there’s lots of gear and most prob not needed.

So on to the actual question. Space is not a problem as I’ve got a 1200sqft garage with and upstairs office. Uninsulated though. There’s a 8500 btu window unit (cool only) in that area I intend on using to cool the room. However it’s too small to cool the entire area so I want to frame a room probably 4.5 x 4.5 x 5.5/6 and set the room against that unit and essentially use it to cool that cut off area which shouldn’t be an issue. Exhaust would dump out the top through a 6” duct going up to an existing Whirly bird vent and would be on a thermostat set at say 76f-80f. Obviously running this through a scrubber as well as putting carbon filters in the filter base of the window unit. Effectively exhausting all heat and smell. The window unit should pull in outside air to help with co2 as well as recycling so shouldn’t need to have any intake holes really? For heat(coming into winter here) I intend to use a small space heater ran through a thermostat to regulate it. Also will be on a timer to only activate on night cycles. So my question is with a 1000w hps is there a minimum room size standard. The peak of the room can be up to 9’ but as the width grows the height will drop as well. I only intend on growing 4 girls at a time and will do a scrog method. Most likely will do 3-5 gal pots. So probably only need around 5’ in height honestly. I also have a 3700cfm gable exhaust fan I installed this summer in the main portion of the garage that will kick on when temps get to 85/90 which really clears out the room and recycles the air.

Just curious of yalls thoughts on room size for 1000w hps only. And also your thoughts on the window unit acting as my intake. I have another window unit in my office inside the house and it runs all day off and on and never seems humid honestly. Seems pretty dry. Any advice or tips from guys who have or are using window units let me know. Obviously if I could afford it I’d get a mini split but that’s not in the cards yet...maybe after the first harvest lol. Look forward to you guys’ input
 
Yeah it’s really just miscellaneous build details. The short version is.... can you be ok with a 4x4 or 5x5 with a 1000w if you can exhaust the heat properly and what the General take on using a window unit for cooling and acting as the intake was.
 
Yeah it’s really just miscellaneous build details. The short version is.... can you be ok with a 4x4 or 5x5 with a 1000w if you can exhaust the heat properly and what the General take on using a window unit for cooling and acting as the intake was.
I never heard to much light if you can manage airflow and heat, but I have seen overkill
I first started with 2 - 250's in a tent , then a 1k , then 2 - 600's and so it goes LOL
Good luck on your quest
 
I never heard to much light if you can manage airflow and heat, but I have seen overkill
I first started with 2 - 250's in a tent , then a 1k , then 2 - 600's and so it goes LOL
Good luck on your quest

I intend on using 4 2’ T5’s for the seeds and early stage of veg. Exhausting won’t be an issue but concerned on how I’m thinking the intake. The window unit will cool it plenty but never used a window unit and always had open loop systems in the casa. After a couple weeks I’ll throw into the main tent area and hit them with the 1000w. It’s dimmable I believe so if so I’ll start low and ramp up lights over a week or so if not I’ll start high. It’s always a quest isn’t it? lol hurry up and wait... I’m planing on at least a 4x4 scrog and may drop to two ladies instead of four. This will be my first scrog though as the beans are femmed. Never felt like wasting the time with unknowns.
 
I intend on using 4 2’ T5’s for the seeds and early stage of veg. Exhausting won’t be an issue but concerned on how I’m thinking the intake. The window unit will cool it plenty but never used a window unit and always had open loop systems in the casa. After a couple weeks I’ll throw into the main tent area and hit them with the 1000w. It’s dimmable I believe so if so I’ll start low and ramp up lights over a week or so if not I’ll start high. It’s always a quest isn’t it? lol hurry up and wait... I’m planing on at least a 4x4 scrog and may drop to two ladies instead of four. This will be my first scrog though as the beans are femmed. Never felt like wasting the time with unknowns.
As a rule I never use my dimmers on my ballast it shortens bulb life
 
As a rule I never use my dimmers on my ballast it shortens bulb life
Interesting! Good advice. I’ve never used dimmers. And never been over 600 watters. This guy went way over board honestly. I’ll get all the gear tmw but i won’t be home to set it up till Friday...sad...but I’ll post some pics of all the gear and then it’s time to build the room out. I appreciate the tidbit about the dimming though. Thanks Herb&Suds
 
Ok so I’ll keep this fairly short for the non readers here.
I’ve got a 1000w setup coming. A friend ordered everything but has since decided not to use it. Gears never been used. Here’s a few specs:
1000w hps/mh - no cool tube
6” 2500cfm exhaust fan
Dutch pro nuets A/B and some other extras. All DP brand
Fox farm soil I believe but may go down to local garden and grab some organic with a batch of compost tea
List really goes on.... starter plugs. 10 femmed beans 2 strains. Unknown currently by me. Meters, ratchets, ph updown, T5 w humidity dome etc. the guy literally orederd a $1000 worth of stuff and has never used it. Even down to panda film. So anyway there’s lots of gear and most prob not needed.

So on to the actual question. Space is not a problem as I’ve got a 1200sqft garage with and upstairs office. Uninsulated though. There’s a 8500 btu window unit (cool only) in that area I intend on using to cool the room. However it’s too small to cool the entire area so I want to frame a room probably 4.5 x 4.5 x 5.5/6 and set the room against that unit and essentially use it to cool that cut off area which shouldn’t be an issue. Exhaust would dump out the top through a 6” duct going up to an existing Whirly bird vent and would be on a thermostat set at say 76f-80f. Obviously running this through a scrubber as well as putting carbon filters in the filter base of the window unit. Effectively exhausting all heat and smell. The window unit should pull in outside air to help with co2 as well as recycling so shouldn’t need to have any intake holes really? For heat(coming into winter here) I intend to use a small space heater ran through a thermostat to regulate it. Also will be on a timer to only activate on night cycles. So my question is with a 1000w hps is there a minimum room size standard. The peak of the room can be up to 9’ but as the width grows the height will drop as well. I only intend on growing 4 girls at a time and will do a scrog method. Most likely will do 3-5 gal pots. So probably only need around 5’ in height honestly. I also have a 3700cfm gable exhaust fan I installed this summer in the main portion of the garage that will kick on when temps get to 85/90 which really clears out the room and recycles the air.

Just curious of yalls thoughts on room size for 1000w hps only. And also your thoughts on the window unit acting as my intake. I have another window unit in my office inside the house and it runs all day off and on and never seems humid honestly. Seems pretty dry. Any advice or tips from guys who have or are using window units let me know. Obviously if I could afford it I’d get a mini split but that’s not in the cards yet...maybe after the first harvest lol. Look forward to you guys’ input

Legal or no? It makes a difference on setup.
 
Legal or no? It makes a difference on setup.
Define “legal” lol. Stealth is the game here lol. Concerned that the window unit may let too much smell out and if I block up the filter area with too much carbon paper it won’t breath right.. I own the house so modifications are up to my imagination
 
Smell isn’t an immediate concern for now... but would like to have a solution in place for when it is. The inline exhaust fan will have a 24” scrubber which should combat any smell along with and ozium block at the roof vent but the window unit is looking to be problematic. Tested with a little smoke session and my wife could smell it outside so it’ll need to be corrected for sure before too long.
 
Yeah it’s really just miscellaneous build details. The short version is.... can you be ok with a 4x4 or 5x5 with a 1000w if you can exhaust the heat properly and what the General take on using a window unit for cooling and acting as the intake was.
Pretty sure all thats going to happen is when exhaust is on the air will pull through the window a/c. The a/c running isn't going to be an fresh air intake. Don't they recycle inside room air and blow out?
 
You’d stil
Pretty sure all thats going to happen is when exhaust is on the air will pull through the window a/c. The a/c running isn't going to be an fresh air intake. Don't they recycle inside room air and blow out?
edit—-
Depends on what settings you have it on. If running fan only it’ll just pull air from outside and dump into the room. If you’re running cool then it recycles the air in the room and cleans air across filters then blows across evaps and dumps into the room.
 
Last edited:
So essentially it’ll be a fresh air intake. Only other issue I see is the stupid economy modes they have now and how they tend to cycle to auto and don’t cool worth a shit at that point.
 
So essentially it’ll be a fresh air intake. Only other issue I see is the stupid economy modes they have now and how they tend to cycle to auto and don’t cool worth a shit at that point.
I know it's too late, but good old fashioned manual controls is what you want. You can also run them on a separate temp controller and when they turn on a button doesn't have to be pushed first.
Same with anything automated that you want to get, like a humidifier, or dehumidifier, exhaust fan. I prefer to control them with a temp or humidity controller.
 
I know it's too late, but good old fashioned manual controls is what you want. You can also run them on a separate temp controller and when they turn on a button doesn't have to be pushed first.
Same with anything automated that you want to get, like a humidifier, or dehumidifier, exhaust fan. I prefer to control them with a temp or humidity controller.

All my control will be coming from an Emerson E2 Controller mounted on the other side of my garage with a cat 5 cable to my switch so I can monitor remotely through a 3rd party software called ultrasite wherever I’m at inside or outside my network. I will have 10k thermistors all around at different critical locations for temp control for exhaust and monitoring points and then I’ll have a co2 sensor to monitor Ppms as well as humidity at the plant level. Problem with controlling the window unit in this way though is that when it turns off(breaking the hot leg through a relay that I’m controlling based on temp) and then back on based on temps it’ll restart in economy mode and it’ll run like shit so I was trying to keep the window unit isolated to its own sensor and let it run based on that. Can always pull out the built in thermistor and extend the wire to get the sensor closer to where I want it. Ideally a fuckin mini split wired into one of my control boards would be best but can’t afford the split right now. But I feel you on manual controls. Smarter isn’t always better lol. However I’ve got access to a pretty unique controller that can literally run anything. With 16 onboard smart relays capable of up to 220v and 32 analog/digital inputs I’ve got the control and wiring taken care of. The window unit is the only thing I’m uncertain of. Seems like I’ll just have to give it a go and see how it handles.
 
Thanks all for the advice and tips. Seems like a rather friendly community, glad to be here. I’ll be setting up a journal in the next week or so, so drop by and give me any advice or tips there too. I do controls for a living so the automation is easy but it’s the fine details I wanna get ironed out before they become a problem.
 
This is the controller I’ll be using. It really can handle any application so as I expand my enviornement and get to a point we’re i automate co2 this will save me thousands down the road.
 

Attachments

  • 7F888765-9DB1-4A4B-A1D1-0962DFC44EDF.jpeg
    7F888765-9DB1-4A4B-A1D1-0962DFC44EDF.jpeg
    1.5 MB · Views: 8
All my control will be coming from an Emerson E2 Controller mounted on the other side of my garage with a cat 5 cable to my switch so I can monitor remotely through a 3rd party software called ultrasite wherever I’m at inside or outside my network. I will have 10k thermistors all around at different critical locations for temp control for exhaust and monitoring points and then I’ll have a co2 sensor to monitor Ppms as well as humidity at the plant level. Problem with controlling the window unit in this way though is that when it turns off(breaking the hot leg through a relay that I’m controlling based on temp) and then back on based on temps it’ll restart in economy mode and it’ll run like shit so I was trying to keep the window unit isolated to its own sensor and let it run based on that. Can always pull out the built in thermistor and extend the wire to get the sensor closer to where I want it. Ideally a fuckin mini split wired into one of my control boards would be best but can’t afford the split right now. But I feel you on manual controls. Smarter isn’t always better lol. However I’ve got access to a pretty unique controller that can literally run anything. With 16 onboard smart relays capable of up to 220v and 32 analog/digital inputs I’ve got the control and wiring taken care of. The window unit is the only thing I’m uncertain of. Seems like I’ll just have to give it a go and see how it handles.

I had the same problem with inkbird controlling my air conditioner because it was digital. Only will control the analog type, I found out
 
Since you don't have much in it, get a vented hood and run your light heat separate from the room, to/ from outside preferably. The ac should keep the room cool. Put a carbon filter and fan venting from your grow to the outside to keep a negative pressure on the room so odors stay in check.
 
Back
Top