Moving along the defoliated plants are filling back in slowly and building bud.
Right side cab seedlings are alright gave them a heavy watering/flush when i changed out the reservoir yesterday and decided to go to MC 1 part for it again, the pollen plant may have its second flush starting to drop in the next week which is fine for me, and the purple kush seedlings looks like they hit a K excess issue the one is powering through ill need to start some more eventually once i work out whatever kinks i have as they have had a rough go by my tutelage.
Third cab seedling are doing very well at the moment.
Left side cab is moving along, left reservoir i swapped out to a flower ratio of the MC 2 part so we will see what happens there, right side is running the one part.
Right cab, starting to get drop able pollen again so back plant has been dusted, and will continue to do so over the weekend as there are viable pollen sacs to use by the next update i expect for the pollen producing plant to be gone, as for the others they are all doing well i went back to MC 1 part for the res on the left side as im just not sure on the 2 part for seedlings yet, the small purple kush is staying a bit stunted and is still showing K excess so whether its acidified or just saturated im not sure, it will get a flush with fresh nutrients after it dries out a bit more.
Third cab, multiplan ted plants in promix are moving along happily there making me consider doing a run in the bottom cabs with promix and bigger pots as its been relatively smooth and less watering than you would think compared to coco.
Left cab starting to stack a little, most and especially the back left plant are majority cloudy trichomes at the moment still a lot of time left on them though.
Left side building some more, getting some spotting though also gave them a sorta flush changeover that i think was the cause of it.
Right side there all growing well a situation though is one plant has no spot automated watering wise and seeded plant looks haggard from lack of attention, so whether it gets moved to a window or elsewhere eventually or one of the plants gets culled i havenât quite determined that yet.
Third cab they are starting to fight a little looking like i will have 2 out of the 6 going purple early though the others may later, contemplating removing the smallest of the plants but have made no decisions on that as of yet, also couple of there lower leaves went yellow and or spotted a little so gave them feed watering and starting to have to increase my watering frequency with them.
you would be correct though i really believe they were hampered on the start by me so i would expect them to be faster and comparable to the others if i ran them again.
Hey my dude @Mr.Sparkle, did a quick search through this thread, but didnât get a full read though⌠was wondering how you are handling temp/humidity/vpd?
Did I see you are just trying to control that via exhaust fan and foliar spraying?
Just fan setpoints which is max temp and or RH that i want, and extra co2 specifically on a micro or macro scale is unnecessary imo as were already running higher than ambient due to being in a house and usually alto of other things are limiting factors before you would even benefit from it.
Left side cab unless a second flush happens they are getting near the end, probably still 2+ weeks left, raised the right side res up about 2" just to give them a bit brighter light and make them sorta equal to the rest, could probably start thinking about reducing feed iâll jest check res levels on my next fill this weekend to see.
Right side, moved the seeded lemon pie off the one reservoir to allow the one plant that didnât have a spot some auto watering and moved the rest of the plants around a bit back right two being the purple kushes, That lemon pie is still in this cab its was just not pictured in this photo as it would of blocked the rest, currently its sitting in a lid thats acting as a tray right at the the front, will just be hand watering it till i think the first pollinated seeds are good enough, should only be a couple weeks.
Third chamber culled the two littlest plants one in each pot just to provide room for the others, and been watering more regularly hopefully wont have any of those leaf issues pop up now.
I donât know if you ever thought about this or if it would even work (may not be worth it in your setup; fixed lights?), but could a combination of raising and lowering the light height plus the light intensity (+/-dimming) be a way to help heat or cool your cabinet as well?
Maybe then the exhaust fan could be more for just the RH (even though it would still effect temp, but maybe mitigated some?)?
Currently and last couple runs my lights have been fixed, i dont raise and lower them anymore and they are actually zip tied in place instead of my old tie off method.
As for temp and humidity they are hand in hand so you canât look at them in a disconnected way as you could take the same air and have it at 20c or at 30c and there humidity will be different even if the exactly the same air, though yes your light output can change the temperature in the cab whether up or down in a basic sense though its not like how it once was in comparison to say floros or hps/mh where heat extraction and having to turn down lights to maintain those heat levels were what you had to do, proper ventilation design still should be first and foremost its just that it can be very easy for you to keep temps and humidity down to a detriment just cause these spread led light systems run alot cooler nowadays, to give you an idea my fan is at its lowest setting and cycles on and off as it hits its setpoints and probably is only actually on 20-25% of the time in any given day.
As for the droop we were talking about no it isnât bedtime droop, but the plants inability to handle the amount of light its receiving causing it to droop to avoid damage same look and same effect but different reasons.
So my question then is, if there is one(or more) of the four potential scenarios you ever run into that is problematic with just have an exhaust fan as mostly your form of control (besides light dimming):
Too hot, too high humidity
Too hot, too low humidity
Too cool, too high humidity
Too cool, too low humidity
And this is why I was asking about raising/lowering light height and intensity as an addition to the exhaust fan for some extra controlâŚ
Letâs say you got too much humidity, so the fan kicks on, but now itâs starting to get too cool⌠you could raise the lights and increase intensity to possibly increase temp for example while still giving the plants similar amount of light for example?
Well I run off essentially too hot or too humid, fans arenât on otherwise, saying that the warmer you run the higher humidity you can have to the point of detriments, light height doesnât really matter for me in heat regards as whether it mid point or at the top due to circulation fans the difference isnât really big enough to warrant that as a point of control, dimming though is needed sometimes at the start cause otherwise all that light energy with no or little plants to utilize that causes that light to be changed into heat as it has no where to go so starts can run into high temp but low humidity where itâs an issue dimming though easily takes care of it.
Also consider plant maintenance as another form of control, such as if the space is too humid to the point that your setpoints on a fan drive the temps down due to trying to keep humidity in check, one can always pluck some fan leaves to reduce that water load in your air.
Youâre running an arduino or some sorts right? So you just have either of those inputs (temp or humidity) as the trigger for the single fan? Or do you have two exhaust fans separately controlled?
Itâs cool that you are able to get away with out a humidifier or dehumidifier, heater or a/c (or is just the room your cabinet in helping with that?) where I feel like a lot of typical grows usually have at least one of those things going?
Does the micro nature of it help with that at all in any way?
no arduinos anymore, ive gone basic to a sense my fan though is a acinfinity t6 so it has a temp/humidity probe that it runs off of if you want it too and that fan does both of my lower cabs, the probe though is located just before the exhaust port on whatever cab has the most plants in it. My third chamber though mind you also a new build is just a 120mm pc fan that has a pwm controller thats set at 20% at the moment and ill only be going off leaf temps with it adjust the pwm control to dial that in as needed.
As for humidifiers and dehumidifiers all depends on ones environment and what they want to do, as a person who lives in a desert is gonna be different than one who lives on the coast, and say if that person who lives in a desert wants to run cool then they are definitely gonna run into low humidity issues unless they have enough plants growing to cause enough transpiration to change that or a humidifier to help.
Myself its a mix of living with non ideal situations and letting the plants do their own thing but changing other factors to help with that such as light dimming on starts when too hot, slight fan leaf defoliation when needed to keep the humidity from getting too high or slowing the exhaust fan if humidity is too low, its just a balance.
Third cab also stretching and growing, front left will be the healthiest of them though its a green pheno, still on the fence if i want to cull the little ones or not.
