Goofys Back! New grow room.

[goofy81]

Hi
Just thought i'd like to share my new grow setup with you guys.
Very messy, but it'll be all cleaned up once everythings potted.
Basic Grow room. 8 Power sockets in each corner ( twin on top and bottom) for fans and other if needed.
No ballasts or timers kept in this room
Scrubber on top in middle opposite intake. Currently runs on a thermostat but soon will probably leave it on 24/7.

Seperate room for most electronics and nutrients.
Mother plant atm! Its grown from seed. originally started with 2 in this same pot. But one turned out male you can see the stump of the one i cut out if u look carefully). This one has the two pistil antennas that come out of the bits so 99% sure of it being female.

Currently experimenting with a RDWC setup too. One big container and one smaller about 50 litres and 72 litres. Going to compare it with the coco growth. By tomorrow all plants should be potted.


Thats all for now.
Goof out!

 

[LokiLoki]

Cool setup

 

[goofy81]

Just a quick update

Very happy the roots are heading towards the water only after a few days.
Also showing how they're being fed, not sure if its a good method.

First time DWC so hopefully theres no problems

 

[goofy81]

2 Months later! they are bigger than seems in the photo!

 

[goofy81]

Seems theres not much interest, might be my last post for this grow.
Thinks are looking nice and healthy. Very slight nute burn from not flushing ever.
My biggest plant collapsed like a starfish, lucky nothing broke, and its looking good again.

Because of the unknown strain, hoping to get 7lbs possibly 10.

 

[ozzieAI]

got a few monsters there goof...looking good...

 

[whythefnot]

Nice work, glad you stopped in -- I don't get out much. Sub'd!

 

[who dat is]

Looking good in here Goofy! I wouldn't give up on updating the thread though man. Sometimes it just takes awhile to get the ball rolling. If nothing else updating your thread will help you remember dates, flower times, etc. Add a couple more pictures of a little better quality and I'm sure your thread will take off, especially now that your mid flower.

 

[omgwtf]

good job, keep it up !

 

[goofy81]

*double post

 

[goofy81]

Just got through a week of 40's degree weather!topped at 44.7c (112.46 fahrenheiht) on sunday but lucky my babies are still ok. The room gets to 100-110f so probably it was a bad time to 12/12. I"ve also started to water them twice when lights are on instead of once. I realise i was underfeedingmy plants when i gave one 5 litres of water and no waste came out!
My E.C was 2.2 (1600ppm) which gave be nute burn as u can see in the below photo. I've dialled it down to 1.8 hoping it'll be better.
Heres a panoramic shot i tried to take. Buds are slowly getting bigger even after 40 days!

 

[who dat is]

Hell yeah man! Those are going to fill out so nicely. I can't believe those temps though, that's crazy. Where were you again? Down under? Tomorrow the high here is supposed to be 4 Fahrenheit.

 

[goofy81]

Got some minor fox tailing or new growth on the buds! buds growing on buds! not sure how long and if they'l get any bigger.

these buds are no where near as fat as my previous grows which is worrying me

 

[whythefnot]

Got some minor fox tailing or new growth on the buds! buds growing on buds! not sure how long and if they'l get any bigger.

these buds are no where near as fat as my previous grows which is worrying me

It's most definitely those temps causing the larfy bud growth. I think you can probably save the crop (to a reasonable extent) if you get them down. Are you sealed or venting? What are your CO2 levels? If you're venting (which I suspect you are), have you ever considered adding a large window unit and CO2 and sealing it up? Those temps are really extreme.

What's your humidity like? Must be pretty high, the plants look happy at least.

Edit: Oooh - ho - ho... On further inspection of the photos I definitely see some high VPD issues, which should be expected at those temps. It's not to the extreme the way my last crop was, but I bet those leaves feel a little leathery to the touch, right? Seriously need to get those temps down.

 

[goofy81]

Hi !
Not sure what VPD is, but its not a sealed room, no Co2 either.
Refridgerated aircon is impossible because this is all in my garage where one side of the wall actually touches the neighbours land. The power bill is already in the $2000+ range, :O
The larfy bud growth should add a few more ounces overall i hope. It might be time to harvest soon because im actually around the 7 week mark.
Humidity is always 43-60%.

 

[whythefnot]

Hi !
Not sure what VPD is, but its not a sealed room, no Co2 either.
Refridgerated aircon is impossible because this is all in my garage where one side of the wall actually touches the neighbours land. The power bill is already in the $2000+ range, :O
The larfy bud growth should add a few more ounces overall i hope. It might be time to harvest soon because im actually around the 7 week mark.
Humidity is always 43-60%.

Whelp, sounds like you're stuck with what you've got then

I didn't understand VPD until very recently, but as it was told to me by a much more experienced grower on this site, it is a very important concept for any grower to understand, and it is definitely affecting your plants based on the way they look in those photos. VPD stands for Vapor Pressure Deficit, and it is the measure of the difference of vapor pressure inside the plant vs outside the plant. In other words, it is the measure of how hard the air in your room draws water from your plants. The higher the temperature, the more water the air can hold, even at the same RH%. So as it gets warmer, provided the humidity remains constant, the air draws water from your plants (through transpiration) at a faster rate, eventually faster than your plants can provide, resulting in deficiencies of the most mobile nutrients. At temps in the mid 80's, cannabis and many other plants function ideally at around 70 - 75% humidity. Much hotter than that, and no amount of humidity will keep the air from sapping the leaves dry. There are charts online that show this data, I'd recommend doing a little googling to familiarize yourself further.

That yellow "burn" you have at the leaf tips is the dead giveaway I'm going by. Don't fret, my room looks basically the same way, but my temps never topped 85, it was just one rough night of very low humidity in my case (I live in the desert). I've never seen a grow over 90*F that didn't get all foxtailed like that, and I've also never seen one that yielded decently compared to similar lower-temp grows. I'd love for you to prove me wrong on that with this crop, though.

Also, in my limited experience, foxtailing buds seem to reduce yield rather than increase it, but you may know something that I don't there.

I know you don't want to spend the money to cool the room, but a mini split unit, if you can get past the cost, is easily concealable and virtually silent outside of the room.

Barring a condenser-based A/C or sealing the room up and injecting CO2, have you considered running a swamp cooler (evaporative cooler) in the room? Your humidity may not be quite low enough for it to be too effective, but it could offer you some protection from the heat via increased humidity, and possibly bring your temps down a few degrees at very little cost. They're kind of a pain to install, I'm sure, but not as much work than a mini split.

For the environment you're stuck with, the plants look incredible. Usually very high temp grows don't get so frosty, and those nugs look pretty dense despite the foxtails. What are your nighttime temps like? Must be pretty low I'm guessing...

 

[goofy81]

Hi!
Thanks for the helpful insight. As you can see from my previous grows i used to be ok without aircon (all previous grows are without aircon), but i guess some strains can't take the heat as well as others.
Night time temps during the summer heat was about 30-35c (80-96f) which was great!
I think for me the temps get too high because i let them grow/stretch too big and they are really close to my lights. Some buds are about 5-6 inches from the lights.

To be honest i havent had a fox tail problem before. What i am finding interesting now is the fact that i'm getting a lot of new bud growth on top of the old buds, all white hairs(not sure if this is a good thing. Its day 51 now which is about 5 days from 8 weeks and the buds are getting larger. I have a security cam setup in the room which takes a photo from each day thats how i can tell the buds are getting larger. I will probably put it in a GIF file later on and put it in this thread.

When you said ideal humidity is 70-75% i've always thought that was too high and would cause bud rot. If you look around the interweb most suggestions indicate 40-60% and higher for cuttings. I have had bud rot in the past due to massive colas but i dont tihnk the humidity was ever that high even.

 

[whythefnot]

When you said ideal humidity is 70-75% i've always thought that was too high and would cause bud rot. If you look around the interweb most suggestions indicate 40-60% and higher for cuttings. I have had bud rot in the past due to massive colas but i dont tihnk the humidity was ever that high even.

Sorry if I'm about to seem a little pushy, but I feel like it's my responsibility to help straighten the record on this, after dealing with it myself. I was under the exact same impression until recently due to there being a lack of insight around the interwebz. What I learned has made me a far better grower. Humidity has a HUGE influence on growth rates and plant health, and therefore should not solely be determined by what may or may not cause mold or mildew. Have you ever wondered why sometimes your plants look incredible, standing up and praying to the lights, and other times looking sort of flaccid -- still healthy, but not perfect? The answer probably lies in a lack of humidity control (it did for me, anyway).

I was given the truth by Bobblehead and Mister_D on my current journal (if you want to read through the first dozen pages or so), which is much more nuanced than the simple "40 - 60%" you hear from everyone else. A little more in-depth research on plant science (i.e. not the grow forums) verified what I learned from them.

To control mold or mildew, you only need to control nighttime humidity, since this is when humidity will spike due to dropping temperatures. High daytime humidity will have little to no effect on mold and mildew growth provided that nighttime humidity is kept at 50 - 55%. I have a dehumidifier on a timer running only during the 12 hours that my lights are off. When the lights come back on, a DIY fogging humidifier on a separate timer quickly raises the humidity back to the mid 70's. During the second month of flower I'll crank that back to 55 - 60% as buds get dense, but I will also lower my temperatures to the upper 70's (and then lower 70's by the end), right in line with the proper VPD (see chart below).

If your humidity is too low during photosynthesis, the air will draw water from your leaves faster than it can be replaced by the roots. In extreme cases, it will result in the VPD damage you and I both have right now, and much worse. A quick google image search will turn up a couple results, but not a ton.

If your humidity is too high during photosynthesis, the air will not pull enough water from your plants' leaves to support maximum metabolism (it becomes your limiting factor). If it is extremely high (90+%) you may run into issues with mold and other unwanted fungal growth, although when I lived in the gulf south US I ran at 95% humidity much of the time with no ill effects, and not a spot of mold.

If your humidity is too high during lights off, mold may take foot depending on a number of issues, including plant and soil & surface (beneficials) health. You are much less likely to have issues with this if your BRIX (leaf sugar) levels are high.

If your humidity is low during lights off, nothing will happen that I know of.



You can clearly see in this standard VPD chart that at normal grow temperatures of 75 - 84, plants perform best at RH of 65 - 80%. And any warmer you get, plants want more humidity (although I wouldn't take it over 80, just to be on the safe side). You want VPD around .85 kPa for best plant growth. There is a formula to calculate proper humidity for a given temp, but it's much more complicated than any of us need, and this chart is exactly the same for our purposes.

(the chart I wanted to use is at another forum and icmag isn't letting me directly post it so I dled it and uploaded it to my account here -- the main resource for this information, just4growers.com, is currently down, so I can't use their images, but I'm going to link to it anyway because that's most likely temporary. If you google image search "vapor pressure deficit chart" you will find the charts I'm describing; there are 3 different charts if I'm not mistaken, but they all have the same information)

when their site comes back online there's a great article about it here.

I want to point out that I realize this sounds like a load of B.S. coming from some guy on the internet, but this is the biggest piece of misinformation surrounding growing, and cannabis growing in particular, that exists today. I urge you to do plenty of independent research on the topic. And don't take advice on this issue from any forum user unless someone can back it up as robustly as I just did. Spent half my morning on that

 

[goofy81]

Finally everything has been dried and weighed. I let the plant flower for 9 weeks which i felt was too long.
Cutting took 2 people 27 hours (over 3 days) basically the entire weekend. We left a lot of the smaller fluff out and just chucked them because it was a waste of time.
None of the buds were massive like my past grows, but this is probably because the strain wasn't a great yielder.
Stretch was a MAJOR issue i realised as i was cutting things out.

All in all, it was a total yield of a tiny bit over 8.5 lbs.
I'm difintely confident about getting over 10 next time when i get a good strain , better cooling, more additives , (only used A + B + Koolbloom liquid in the last 4 weeks).

 

[who dat is]