cooling and air excange

[CBDbear]

Hi guys!!
here some thoughts on how I can cool down my space would love some input or suggestion on the matter!!

I was trying to archive a sealed room and add CO2 but I couldnt get a good controller so I decided to hang on the CO2, also more experienced people suggested me to tune the grow with no gas added before going full blast...

the A/C unit is 12k btu and only on boost mode can actually cover the btu of other electrical components of the system when led are full power.

(would love to have a quantum reader to stop the guesswork on the diy fixtures distance and dimming and amps but I've poured in everything and I'm centless sigh...)

soon I intend to implement controlled intake and exaust fans to help the A/C and also co2 wise!

Now I have the fresh air in by opening the door 3/4 time a day but I dont know if the Co2 provided is sufficient, the room is sealed but probably not airtight...this is one of my biggest concerns for this grow... along with not having supplemented enough calcium to the plants. the stem is so weak and they're bending like rice heads under the flowers weight

In the future I was thinking of something like a passive cooltube linking all the fixtures.

the idea is very basic, a vent pipe input air from below like floor level than rise trough the canopy up to connect just above the first light of the line, the ligths are squared based, attaching somekind of nylon bubble above to them should be safe from fire hazard perpective? the max temp on back of led is 40/45 C depending on dimming but no direct nylon contact only to the frame, cooler.

Than a pipe vents up to ceiling with another pipe connecting the ligths toghether so minimal interation with the sealed system, would be better a pipe for each fixture?? would this work or some fans to pull or push the air might be needed?

anybody did passive extraction on Lights? having the vent pipe getting smaller would implement the air speed using Venturi effect might prove useful and make fans not needed?

how was your experience when triyng to keep the temp in chek? how did you compromise?

 

[Drop That Sound]

Silicate additives (from early on makes stems more pliable) and scrog nets will help with the weak stem issues in the future.

Are the leds using full sized heat sink panels as the frame, like quantum boards? I dunno, I guess you could add a sealed box made out of sheet metal or something, to the top of each fixture, and run a closed loop venting system just for the lights if they are.

Or better yet solder some copper pipe bent into coils and water cool them with a chiller. Not sure I would want to hang bubble wrap though.. Probably just get another AC and seal the room completely is the best bet. That includes the inside of the AC units as well, if they are window units, as some need a little bit of help.

Awhile back I came across this unit for a c02 controller, I'm pretty sure others have had good results with it, and the price is good:
https://www.amazon.com/Day-Night-Monitor-Controller-Greenhouses/dp/B017847K76/ref=sr_1_4?keywords=c02+controller&qid=1567199671&s=gateway&sr=8-4#customerReviews

I know most would say get a feel and dialed in before c02, but i'm the type that thinks going sealed from the get go is the best way to go. Everything is more effecient that way, and you might not otherwise be able to get the environment in check without doing it.

You can't really half way seal a room and not waste big amounts of electricity and gas, etc..

 

[CBDbear]

hi Drop thanks for tuning in!

yes the led are 6 panels(qb) of 308 lm301b 3500k mounted on a squared frame but no heatsink since the PCB board is on a aluminium panel and dissipate heat in a sufficient manner...obviously an heatsink would be the best but those shure are not cheap...
having my boards more space between each led is a good thing heatwise and also on light penetration and distribution point of view, I was bothered that I couldnt get any cooling device for the led but they just seems to run fine by themselfes!

I did look in liquid cooling but unless i have the heatsink outside the growing ambient those btu will still be in the system, so i would need to mount a maze of pipes full of water trough my diy led and mount a external pump+heatsink it does look somehow careless on a safety level...

I tried drop the power of the led trying to get a better balance in amb temp for now.

I read silica is a good deal for plants health I will shurely give it a shot, I was thinking to get some bone meal in the soil to prevent the same problem again since even the scrog section of the grow stems are thin and kinda flimsy...

It also can be a poor connection of the ac the pipe from the external compressor having it running not full capacity... I had it connected from an electrician but to my knowledge he didnt have the vacuum pump or any extra gas added to the pipes he said it was fine but it is still buggering me... this should cheked better but as forementioned I'm kinda broke... also is hard to get trusted people near my box, I'm doing a cbd high almost no thc strain so I'm ok with my country legislation, still I prefer to run it under the radar for the time being...

Thing is running co2 would allow me for a few more heated amb temp, blasting led full power get the box at 28/30 C (probably varying seasonally).

not shure those kind of controller are up to the task, I would prefer a timer based setting and EU sokets otherwise I need to cut the plug and invalidate the warranty doing so...

 

[CBDbear]

update:
setting led 20% lower fixed the btu+(lights dehum+ext temp)btu-(A/C) equiliblium in a decent way so i can run last week cooler!! such an amazing way to preserve your terps!