Heat control using Gavita de lights

[Chrisjcs]

Hows it going, first post on this site and just looking for some opinions, I have a 10ft x 22ft room with 10ft ceilings. I have 8 gavita lights hung, 2 rows of 4 lights. I have a 3 ton split unit ac cooling the room, the rooms is air tight with CO2 levels at 1500ppm. When i first threw all the girls in there i had all 8 lights at 600w and the room stayed in the low 80's F° After a week of adjusting to the gavitas i turned all the lights up to 750w and the room temp went up to 90 F°. Upgrading the a/c or adding any a/c's is not an option right now so the question i was wondering is if i should just keep all lights at 600w and keep the room in the low 80s or instead of running 8 lights and 2 rows at 600w maybe just run 4 lights and 1 row down the center of the room and turn those lights up full power at 1150watts. or should i ruin my sealed room and cut some holes in the ceiling and start circulating some outside air in to try and cool the room.

 

[Aeroknow]

Hows it going, first post on this site and just looking for some opinions, I have a 10ft x 22ft room with 10ft ceilings. I have 8 gavita lights hung, 2 rows of 4 lights. I have a 3 ton split unit ac cooling the room, the rooms is air tight with CO2 levels at 1500ppm. When i first threw all the girls in there i had all 8 lights at 600w and the room stayed in the low 80's F° After a week of adjusting to the gavitas i turned all the lights up to 750w and the room temp went up to 90 F°. Upgrading the a/c or adding any a/c's is not an option right now so the question i was wondering is if i should just keep all lights at 600w and keep the room in the low 80s or instead of running 8 lights and 2 rows at 600w maybe just run 4 lights and 1 row down the center of the room and turn those lights up full power at 1150watts. or should i ruin my sealed room and cut some holes in the ceiling and start circulating some outside air in to try and cool the room.

I'm all about DE's nowadays, and I setup my sealed rooms with 1ton of AC per 2 DE's at 1000-1150 watts each. It works perfect every time. It does sound like you'r a little short on AC . Only you can make the call on what to do right now. If you run ventilated, that will work for these cooler months, but then you might be screwed(depending on the climate where you live) when it heats back up. Tough call. Maybe run ventilated for now, and then when the weather heats up seal the room up again, and only run 6 lights?
I build my sealed growrooms with the ability to ventilate. Put dampers on intake/exhaust fan ducting.

 

[a mongo frog]

Hows it going, first post on this site and just looking for some opinions, I have a 10ft x 22ft room with 10ft ceilings. I have 8 gavita lights hung, 2 rows of 4 lights. I have a 3 ton split unit ac cooling the room, the rooms is air tight with CO2 levels at 1500ppm. When i first threw all the girls in there i had all 8 lights at 600w and the room stayed in the low 80's F° After a week of adjusting to the gavitas i turned all the lights up to 750w and the room temp went up to 90 F°. Upgrading the a/c or adding any a/c's is not an option right now so the question i was wondering is if i should just keep all lights at 600w and keep the room in the low 80s or instead of running 8 lights and 2 rows at 600w maybe just run 4 lights and 1 row down the center of the room and turn those lights up full power at 1150watts. or should i ruin my sealed room and cut some holes in the ceiling and start circulating some outside air in to try and cool the room.

Cant you just run 6 lamps, crank the fuck out your a/c and run at 1000 watts? There are guys on here running 4 DE's with 2 ton split systems, so it would make sense that your 3 ton could handle 6 lamps. Im sure your lights on times are after 6pm, so no problem there.

 

[jarvild]

Don't run co2 or sealed rooms, but it takes me 400 cfm of exhaust to cool my 600-750 de in a 5x5 with 65-68 degree intake air temps.

 

[jarvild]

Also with temps that high in a sealed room, what's your Rh levels running?

 

[Chrisjcs]

I'm all about DE's nowadays, and I setup my sealed rooms with 1ton of AC per 2 DE's at 1000-1150 watts each. It works perfect every time. It does sound like you'r a little short on AC . Only you can make the call on what to do right now. If you run ventilated, that will work for these cooler months, but then you might be screwed(depending on the climate where you live) when it heats back up. Tough call. Maybe run ventilated for now, and then when the weather heats up seal the room up again, and only run 6 lights?
I build my sealed growrooms with the ability to ventilate. Put dampers on intake/exhaust fan ducting.

good looking, my first time using DE lights or having a sealed room. I just built this building in my backyard and i went above and beyond insulating and completely sealing this room thinking i was doing a good thing. My main question was should i run more lights at lower wattage or less lights at higher wattage. but thinking sense its about to be winter right now maybe its best just to cut some holes in my roof and put some exhaust fans in to pump that heat out and hopeful by summer time i can afford to up grade my ac

 

[Chrisjcs]

Also with temps that high in a sealed room, what's your Rh levels running?

when all lights are on at 825 watts and ac is full blast rooms at about 92° 35rh. lights are off i keep the room at 70° 65rh.

 

[justugh]

when all lights are on at 825 watts and ac is full blast rooms at about 92° 35rh. lights are off i keep the room at 70° 65rh.

i been working on this for myself
the only 2 answers possible

1 is 8 to 10 tons ac/acs units to controll it

2 is u need to alter the air flow of the area
about 6 inches off the floor u need to go around and put in air ducting (the hard metal kind the 6x12 in ........u put it on a S bend so it will keep the ligh from messing with your time ....put window screen over the top part bug screen and then put good rotating fans right in front of it to spread the air out .......yours i do it on the 22 walls 4 feet in from the walls on each side and one in the center of the wall making a total of 6 of them (for a 3x3 ft passive intake the S bend will allow u to clog it off when u want plus with it being high the Co2 should increase stay high...plus the fans in front of it to spread the cool air out over the area )

in the center of the roof ridge u are going to use 3 6 inch pipes .....make chimmies ......now with a temp laser gun look for the hottest spots in your set up .....u can set a booster fan at the bottom of the chimney pipe and then run ducting to those spots to suck out the hot air

this will improve the effectiveness of the AC in there and lower the power needed ......summer time u might need a evap cooler or 2

 

[ruwtz]

I have x4 Gavita 650DE's with 2ton mini split, 9x12ft room with 10ft ceilings, sealed. In the summer the AC crunches to keep in low 80's (running night time lights on) pushing it 100%, whereas this time of year it ticks over fine for mid 70's. Lights out temps drop to 64-67F year round.

Summer time regional temps regularly push over 100F, hot and dry, but my building wins from plenty of tree shade.

 

[Chrisjcs]

So i cut some vents in the room, one fan blowing cool air in and another exhausting. With the cool nights helped big time but wont be able to maintain my co2 now and ruined my whole idea of this being a sealed room. Hopefully when i get some money i can upgrade the ac but before the i have to upgrade the panel on my house thats close to maxed out at the moment.

 

[ruwtz]

No stress, you're doing it in the right order

 

[justugh]

So i cut some vents in the room, one fan blowing cool air in and another exhausting. With the cool nights helped big time but wont be able to maintain my co2 now and ruined my whole idea of this being a sealed room. Hopefully when i get some money i can upgrade the ac but before the i have to upgrade the panel on my house thats close to maxed out at the moment.

use a S bend
on the wall use something like this
https://www.menards.com/main/heating-cooling/ductwork/ductwork-fittings/3-1-4-x-12-x-6-stack-head-9-throat-each/p-1444432289493-c-14260.htm?tid=1538595891183343411

u can make it to any size u want and have the cool air dumped at 5 feet .......the chimmies and the heat from the lights will form a natural air draft (if u wanted to increase that u would add the 6 inch inline fan to the them and then add ducting to the hottest spot so it is no longer the hottest spot ....u can change the air flow around just by moving the ducting and using a laser temp gun)

the vents in will still be sucking cool rich co2 air plus what u add in .....just need to make them empty out higher then bud lvl ........by doing this u will also lower the temp of the air quickly .....just add a simple stand fan in front (i mean a fan on it own stand just sitting in front of the vent dumping out ) the vent will feed into be-hide the fan where it gets sucked up and pushed out across the room to lower the IR temp on the leaves

the idea for the 6 vents lower vents and the 3 chimmies was for the size of your area plus it would allow u to section areas off later when u wanted too ...but still maintain the cooling


when u do not need them just clog up ....u will still have a tub like area for your plants to soak in CO2 during lights on .....it might make u need more burn time but if u make the vents 5 and half feet or 6 foot your seal holds and the oxygen should be released out the top and the co2 pool up (u would lose the Co2 that was heated by the IR heat from the lights but the fans in front of the vents will help keep that to least as possible and also act as stirring tool to the gas and a sorce of oxygen for lights out and your gas inside stops producing

the chimmies out are just simple pipes ....the inline fan 6 inch would be 400 cfms on high speed 3 of them would be 1200 cfm at max that can handle the open reflectors

 

[bryangtho]

I run 6 de gavita pro with a gavita controller with no ac at all. All I use is 4 large fans with the 4 of them running they are just over 5000 cfm. Just had some very hot days over here and the room ran pretty good it got to 86. The day temp was 100 and the night temp was 70 so was pretty happy as this is my first grow with these lights. But this just a flowering room and I don't do any veg growing in it at all. Forgot to mention that these are running at %115

 

[Aeroknow]

i have to upgrade the panel on my house thats close to maxed out at the moment.

Are you tripping the main breaker or is it running low on breaker spaces?
How many amp panel?

 

[Dr.Nick Riviera]

So i cut some vents in the room, one fan blowing cool air in and another exhausting. With the cool nights helped big time but wont be able to maintain my co2 now and ruined my whole idea of this being a sealed room. Hopefully when i get some money i can upgrade the ac but before the i have to upgrade the panel on my house thats close to maxed out at the moment.

DE need 4500 btu's per 1000 watts of light. you should have plenty of cooling, i would look at your a/c unit install, I also believe your problem is in your duct design, who did the install?

 

[Chrisjcs]

Are you tripping the main breaker or is it running low on breaker spaces?
How many amp panel?

My main panel was full but put a sub panel in. Haven't popped any breakers but my main panel is only 100 amps, my house has a pool, two kids, lots of electronics and just doing math in my head i know it's pretty maxed out. Hopefully after this crop i can upgrade my panel then upgrade the ac before summer, venting the room worked great with the cold nights i'm having but can't maintain the co2 levels like a wanted but oh well, worth it for better temps and more watts out of the lights

 

[callzium]

I run 6 de gavita pro with a gavita controller with no ac at all. All I use is 4 large fans with the 4 of them running they are just over 5000 cfm. Just had some very hot days over here and the room ran pretty good it got to 86. The day temp was 100 and the night temp was 70 so was pretty happy as this is my first grow with these lights. But this just a flowering room and I don't do any veg growing in it at all. Forgot to mention that these are running at %115

What’s your room size?