Register ICMag Forum Menu Features Search Today's Posts Mark Forums Read
You are viewing our:
in:
Forums > Marijuana Growing > Growing in Coco Coir > What might be causing PH drop in the rootzone?

Thread Title Search
Post Reply
What might be causing PH drop in the rootzone? Thread Tools Search this Thread
Old 02-11-2019, 06:02 AM #11
FarmerWilly
Newbie

Join Date: Jan 2019
Posts: 25
FarmerWilly is on a distinguished road
"You probably arent feeding enough times during the day to keep up with how fast the plants are drinking and eating."

Yup, I think it's as easy as that. Major mistake of mine that I've made. Can't wait to see how the plants will do next time when I'm doing it right from the start
FarmerWilly is offline Quote


Old 02-11-2019, 06:06 AM #12
FarmerWilly
Newbie

Join Date: Jan 2019
Posts: 25
FarmerWilly is on a distinguished road
Oh one more thing, I have seen some springtails. I have read they are not harmful, but in the other hand they are probably living on dead roots, right?

So I'm probably having root rot to some extent. Consequence of letting coco to dry out maybe.. in combination with high ppm.

I'm starting to get somewhere...
FarmerWilly is offline Quote


Old 02-11-2019, 06:06 AM #13
Ibechillin
Member

Ibechillin's Avatar

Join Date: Jun 2017
Location: Tacoma, Washington 47n
Posts: 865
Ibechillin has much to be proud ofIbechillin has much to be proud ofIbechillin has much to be proud ofIbechillin has much to be proud ofIbechillin has much to be proud ofIbechillin has much to be proud ofIbechillin has much to be proud ofIbechillin has much to be proud ofIbechillin has much to be proud ofIbechillin has much to be proud ofIbechillin has much to be proud of
They only show up if they smell something rotting/decomposing to eat, same with fungus gnats but yeah springtails are mostly harmless it seems. You have any damage to the leafs that look insect related?

Why do you want to switch to RDWC? Really thats just asking for more problems. Drain to waste multifeed is the best system imho.
__________________
Quote:
Originally Posted by Ibechillin View Post
24 years young, extraterrestrial.
Quote:
Originally Posted by Zombie Juice View Post
Contemplating how we living under Satan
A Few Recent Listens:

Middle Child by J. Cole

https://www.youtube.com/watch?v=e8CLsYzE5wk

False Prophets by J. Cole

https://www.youtube.com/watch?v=wvFDXV0VBg4

MRAZ by Flatbush Zombies

https://www.youtube.com/watch?v=FaUyq18r_GI

Gold Soul Theory by The Underachievers

https://www.youtube.com/watch?v=4_122Tx8xmg

Fake Fans By The Underachievers

https://www.youtube.com/watch?v=YxwtQ3S5NTY

So Devilish by The Underachievers

https://www.youtube.com/watch?v=GE3eGEd2hp4

Conversation Pt 1 by Mac Miller

https://www.youtube.com/watch?v=7YcXhpgHwvI

The Science Of Grow Lighting (HPS, CMH, LED) & Photosynthesis Explained: (Sticky Thread)
https://www.icmag.com/ic/showthread.php?t=358147

The Drying and Cure Process Explained In Depth, Information On Long Term Preservation: (Sticky Thread)
https://www.icmag.com/ic/showthread.php?t=358186

Ibechillin is online now Quote


1 members found this post helpful.
Old 02-11-2019, 06:09 AM #14
Vanilla Phoenix
Super Lurker

Vanilla Phoenix's Avatar

Join Date: Jan 2015
Posts: 2,945
Vanilla Phoenix is a survivorVanilla Phoenix is a survivorVanilla Phoenix is a survivorVanilla Phoenix is a survivorVanilla Phoenix is a survivorVanilla Phoenix is a survivorVanilla Phoenix is a survivorVanilla Phoenix is a survivorVanilla Phoenix is a survivorVanilla Phoenix is a survivorVanilla Phoenix is a survivor
Quote:
Originally Posted by FarmerWilly View Post
Oh one more thing, I have seen some springtails. I have read they are not harmful, but in the other hand they are probably living on dead roots, right?

So I'm probably having root rot to some extent. Consequence of letting coco to dry out maybe.. in combination with high ppm.

I'm starting to get somewhere...
Root rot will definitely drop pH. And it drops it pretty quick too.
Vanilla Phoenix is online now Quote


1 members found this post helpful.
Old 02-11-2019, 06:15 AM #15
FarmerWilly
Newbie

Join Date: Jan 2019
Posts: 25
FarmerWilly is on a distinguished road
You also asked about my humidity. I bought a very accurate hygrometer that was recommended by my local calibration lab, but I'm still not sure where should I put it. At the moment I am keeping it between the lamps on top of canopy, but slightly, just very slightly between the buds, not above the canopy. This is where I guess is the most harsh environment for the plants (close to lights), so I'd like to see whats going on there - 32C and 60%

When diving into the canopy, then it's a whole different story. Deep into the canopy it's like 27C and 70%.

Its very confusing to hear people talking about temps and humidity, because they almost never say where is it measured.

Even if they say canopy, where's that?
I understand what leaf temp means (ir).
And then there's ambient room temp.

I would personally measure top of canopy and inside of canopy to get max and min temp/rh range

For first 5 weeks or so I tried to keep RH up with 2 foggers constantly running. Then it was much higher RH, around 80%.
FarmerWilly is offline Quote


Old 02-11-2019, 06:20 AM #16
FarmerWilly
Newbie

Join Date: Jan 2019
Posts: 25
FarmerWilly is on a distinguished road
Quote:
Originally Posted by Ibechillin View Post
Why do you want to switch to RDWC? Really thats just asking for more problems. Drain to waste multifeed is the best system imho.
It's either RDWC or Aeroponics. I just want to see what this plant is capable of. I will get over my problems. Everything can be done well.
FarmerWilly is offline Quote


Old 02-11-2019, 08:15 AM #17
Ibechillin
Member

Ibechillin's Avatar

Join Date: Jun 2017
Location: Tacoma, Washington 47n
Posts: 865
Ibechillin has much to be proud ofIbechillin has much to be proud ofIbechillin has much to be proud ofIbechillin has much to be proud ofIbechillin has much to be proud ofIbechillin has much to be proud ofIbechillin has much to be proud ofIbechillin has much to be proud ofIbechillin has much to be proud ofIbechillin has much to be proud ofIbechillin has much to be proud of
The root rot/springtails probably developed before you switched over to doing multi feeds, that should help avoid those issues from happening next cycle. Canopy level just means the average height of all the plants in an area, where your hygrometer is at sounds fine slightly below the top of plants. We narrowed down the reason for the plants getting so tall during early flower as the large swing in day night temp difference, and that the top nugs are foxtailing and top leaves are cupping because they are too close to lights and getting too much IR/heat.

I asked about humidity because it has to do with transpiration rate, this is a vapor pressure deficit chart. The gold areas are where you want to be for maximum transpiration/growth rate. Deep in the canopy 27C and 70% is perfect so i wouldnt want to raise the lights anymore, just need to control stretch/final height so top colas remain happy as well.



The chart is recommending you run 80% humidity to match the 28C - 32C temps your room is running with high dose CO2 like you did the first 5 weeks flower. Id be concerned about budrot etc running 80% humidity all the way through flower personally. Ideally after week 5 I would reduce CO2 dosing, room temperature to 24C - 26C and humidity to 70% to accommodate optimal VPD range.
__________________
Quote:
Originally Posted by Ibechillin View Post
24 years young, extraterrestrial.
Quote:
Originally Posted by Zombie Juice View Post
Contemplating how we living under Satan
A Few Recent Listens:

Middle Child by J. Cole

https://www.youtube.com/watch?v=e8CLsYzE5wk

False Prophets by J. Cole

https://www.youtube.com/watch?v=wvFDXV0VBg4

MRAZ by Flatbush Zombies

https://www.youtube.com/watch?v=FaUyq18r_GI

Gold Soul Theory by The Underachievers

https://www.youtube.com/watch?v=4_122Tx8xmg

Fake Fans By The Underachievers

https://www.youtube.com/watch?v=YxwtQ3S5NTY

So Devilish by The Underachievers

https://www.youtube.com/watch?v=GE3eGEd2hp4

Conversation Pt 1 by Mac Miller

https://www.youtube.com/watch?v=7YcXhpgHwvI

The Science Of Grow Lighting (HPS, CMH, LED) & Photosynthesis Explained: (Sticky Thread)
https://www.icmag.com/ic/showthread.php?t=358147

The Drying and Cure Process Explained In Depth, Information On Long Term Preservation: (Sticky Thread)
https://www.icmag.com/ic/showthread.php?t=358186

Ibechillin is online now Quote


Old 02-11-2019, 04:40 PM #18
Douglas.Curtis
Senior Member

Douglas.Curtis's Avatar

Join Date: Jul 2016
Location: Back in Colorado! Yaay!
Posts: 3,642
Douglas.Curtis has a brilliant futureDouglas.Curtis has a brilliant futureDouglas.Curtis has a brilliant futureDouglas.Curtis has a brilliant futureDouglas.Curtis has a brilliant futureDouglas.Curtis has a brilliant futureDouglas.Curtis has a brilliant futureDouglas.Curtis has a brilliant futureDouglas.Curtis has a brilliant futureDouglas.Curtis has a brilliant futureDouglas.Curtis has a brilliant future
Quote:
Originally Posted by FarmerWilly View Post
You also asked about my humidity. I bought a very accurate hygrometer that was recommended by my local calibration lab, but I'm still not sure where should I put it.
Some photos would help a lot.

Sounds to me like you're not doing any canopy management. I work to keep all the flower sites in the optimal light zone. Too close to the light and they get cooked, or are very tiny and rock hard. Too far away, or too shaded in the canopy, and they are big fluffy and low quality flowers.

Train the tops if necessary, clip all the flowers growing a stem away from the main branch (they're looking for light) at week 2'ish.

You should have even air flow throughout your entire grow area. Your temps and humidity should be very consistent. Cooler at the intakes and a few degrees warmer as it exits the top of the canopy.

This is how you grow a lot of cannabis, all the same quality.
Douglas.Curtis is offline Quote


Post Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


All times are GMT +2. The time now is 04:10 AM.




This site is for educational and entertainment purposes only.
You must be of legal age to view ICmag and participate here.
All postings are the responsibility of their authors.
Powered by: vBulletin Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.