low THC high CBD LED SOG growroom

Hello to everyone!
following the gears and how I rigged my system, not a native speaker bear with me about my spelling and grammar please!

I use led QB samsung lm301b 3500k, 308 of them*6 fixture for blooming, two panels running in veg for about 35% of their max output.
(hopefully im archiving something around 800/1000 umole on canopy from 60cm not sure since i use voltmeter to gauge the dimming)1.5*1.5 mt light footprint from the 6 panels ligths

-dehumidificator
-A/C
-oil radiator for night heating (winter time)
-a device control heating and humidity levels and a water pump.
-evaluating CO2 tank
-ambient temp was 27d/20n 65% humidity day 60% night,late veg to in early flower.

Running almost sealed but since no co2 tank is in action I get new co2 in the system simply by opening and ventilate 2/3 times a day (not shure this is enough co2 or if I'm heavily limiting the plants developing)

Going to have temps and hum to get down as the plants progress to maturity,
now I'm going towards the end of the cycle (last 10 days) and those numbers are about 23/24 and 50%day 45 night also the EC is the bare minimun (0.5)

not shure if I will flush since I aim to re-use the soil for the next run and also using low EC values during grow should not be mandatory taste wise

the water reservoir have circulation pump, oxigenation via airpump(I turn this on just before watering to minimize oxidize the nutes)

As grow medium i choose bio atami coco peat and humus plus 25/30% of perlite a ligth mix for veg and a more charged one for flower repotting in a 20*20cm h23 for SOG set up (using those my plants do get around 120cm tall)

as fertilizers i chose biobizz and currently testing biogrow bioroots in veg and biobloom and top max biogrow in flowering.
I feed around 0.8 1.2 EC reverse osmosis water ph the mix between 6.5 7.0

using RO I had to add mag and especially calcium even then I've ended with extremely flimsy stems, I will amend the soil with bone meal next run.


for the time being I'm having headhaches to get temp equilibrium between heat from machinery and the cooling device, can't really control the temp when pumping led to full blast temps get up to 29/30 c...
too high since I'm looking for quality before quantity,
so I'm dimming them down until co2 bottle will come into the field or a set up of digitally controlled intake and air extraction will be in place...

I migth have forgot to add some details but this is more or less the core of my set up!!
ANY QUESTION IDEA SUGGESTION OR DUBTS??
let's talk about it!!

Pics of the setup would help us see why you are running hot.

the box is 7.5 mt *2.5*3
smoothing up and painting of walls will be done in the time between 1st and 2nd run not shure if I will be able to do something about the floor wanted to get some autolevelling concrete white tone...maybe between 2nd and 3rd run in a couple of months.

ligths are 65 cm to canopy and something about 40 to top buds.

this is how I veg: 1 lt fabric pot for how long I want! but after 2/3 week from transplant basically they end up with squared 1lt rootballs making transplant super easy in 6.5lt squared pot, this batch has some little trouble since EC of emergency soil was too high... RO watering is preventing from a proper overfeeding just having some tip burn here and there...

If your only 10 days to finish just dim them enough to get the temp you want. BTW not very many led grows impress me but this room looks to be packed and doing well. The last 10 days u can def lower your wattage to achieve temps as they are just ripening by that point. Had to convert 30c real quick and that's only 86 f which with leds should be in the range anyways. That "problem" you were having with heat has prob led to that nice room full of buds, lol. That was my issue when tried led was my temps actually weren't high enough.

Did that few days ago, thanks! it's more a general system issue I'm trying to solve...

I'm searching for that sweet spot where plant developement is steady but volatile chemicals of plant don't get ruined by too much heat, some reading around suggest 25/27 C.
I'm not supplementig co2 (yet) so rising more than that doesn't look so beneficial.

I did read that led should/can? be runned at higher amb temp, is that becouse of lack of IR on contary to hps? if so is that for IR effects on stomata or what?I'm not interested in elongation of stems... I'm okay with tight internodes!
but led CRI 90 3500k have actually IR emission no idea how much and if does effect the plant...
hopefully someone might clarify my doubts, or I will find out sooner or later!!

I am still new to growing and I am not satified enough whith the outcoming of this round, I have to really learn to apply the knowledge I'm getting, specially at training my plants and feeding them properly ... on the bright side a lot of space to improve!

looks like you're doing a great job using those lumens
however lining that chamber should be high on your to-do list for next grow. Just lining that chamber will make a huge difference on yield; even though you have been using the light correctly it could be reflected alot better.
wood will very poorly reflect light

but overall, you need to give more info
How exactly do you ventiliate this chamber... Intake? exhaust? sizes? circulation fans? how many?
I know you may be paranoid but it may help to know where the grow is as well. Is this in a basement? an attic? what are your light cycles like and where are you venting to

I really wanted to have painted and smoothed the walls but had to give priority to other stuff to have things up running before running out of money!

as described in first post no intake or exaust other than me opening the door 2/3 times a day,

at first I had 3 50 or 60 w oscillating fans they got toasted with a loose brecker connection done by elecrician...the man actually refounded me about 2/3 of the value!!
than 2 45 w oscillating fans... 1 died few day ago no clues why...so now we're down to one oscillating fan 24/h

the box is in somekind of a non insulated attic I installed insulation mats and plastic sheet on the ouside of the box.

12/12 ligth cycle

hmm so what is preventing you from adding an inlet and exhaust?
Its a matter of cutting in a few holes and running duct places

If this is in an attic, be sure it's a properly ventilated attic
there are cases with growrooms venting into attics causing lots and lots of mold + damage!
ventilation seems to be your major issue here.
As for reflectivity, you can buy cheap emergency blankets and staple them to the walls. I used orca film and that product is sweet, but also expensive. If you want something temporary go for bubble wrap (reflectivix) or panda film or even flat white paint. But since those walls aren't smooth i'd use a liner.
This doesn't seem to important right now as your finishing up your flowering cycle however... next grow realize your plants need to be ventilated . The only thing I can think of that is helping these from mold is the heat from the lights + air leaks in your build and then the heat draws air in through convection..

overall once you line your area this will get worse and you will definately have to rely on fans for ventilation

I use a device called gronode to manage amb setting plus ac also has dehum together they should be able to extract up to 65 lt 24/h, no mould since attic is properly ventilated (it was used to store hay) and humidity is always in the parameters.
I have some experience in building so I was going to plaster while mixing the powder using white paint, smooth and reflective surface served!
I didn't put any extaction or intake since the project in the beginning was that of a sealed room co2 tank supplement, but you know life is what happen to you while you're making other plans!!
I've seen some integrated co2/ventilation control that should resolve this shortcoming of mine, dont want to buy co2 control separate from climate since I need both of them anyway sooner than later....

edit: almost no leak since I profously used silicon to seal almost every gap, as you cans see from the photo

I'm cleaning the plants from fan leafes before drying!

here is a few pics of my favorite she's gorgeous