The Gee Spot - You Finally Found It

[Gee64]

The Outside Gang.

Big RV on the left, BK in the middle, and one of the 7gal RV's on the right.

Big RVDV is a beauty. She just needs to go to early December

The cool nights are bringing in some cool colors.

The 7gal RVDV's took on a cool shape.

The top on this one is a clump of tops.

Big RV is getting into BillVille territory.

Excuse the construction zone the upper tier is only roughed in.

One of the 1.6gal RV's that is a sister clone to the big one and the 2 8gals. Amazing what pot size will do.

A flower on big RV.

 

[Gee64]

Outdoor Batchelor Kush (BK)

She still needs about 3 weeks but she's chunking up fast now. Her resin is coming in. So are her perfumes.

She has a bit of purple creeping in too.

She's quite happy with Gaia Green ferts. They all are actually.

 

[Kaldean]

I would throw a fan below the canopy to aid in evaporation below. The leaves should open back up with the additional air movement.

I’m on it mate. Just got another fan, be here tomorrow, thank you @MedScientist

 

[Kaldean]

I’ve noticed my girls usually slow their water intake a couple weeks after they finish stretching, or about halfway through flower & I adjust accordingly. I would let them dry out between waterings a couple times…

Hi @Thirvnrob
This is something iv always overlooked, with the synthetic set up it’s not as bad as the living soil, and yes mate I will let them dry out more, and definitely cutting back with the watering too, thank you mate

 

[Gee64]

Kal one of these cheapo water meters actually works well. I find that most cannabis is happy at about 6 on the scale.

 

[StoneOtter]

Hi @Thirvnrob and @StoneOtter
How are yous measuring the ppfd, I have an app that you can use paper over the camera as a diffuser, it don’t seem to be giving me a very accurate measurement, any advice ?

Hi Kal, Photon app. I think it's accurate if you calibrate it. The weird thing is you need a source (standard) meter to do it.

 

[Azimuth]

I got a 12 Brix with a slightly fuzzy line at the 10 hour mark, so some progress, though not as much as I'd like. I had leaf temps 6° lower than ambient (84 vs 90). What does that tell me?

 

[Kaldean]

Kal one of these cheapo water meters actually works well. I find that most cannabis is happy at about 6 on the scale.

Hi Gee,
I ordered one when you said about it, and a single ph meter too, from Temu
still waiting, hopefully they should be here within the next couple of days

 

[Kaldean]

Hi Kal, Photon app. I think it's accurate if you calibrate it. The weird thing is you need a source (standard) meter to do it.

Hi mate,
And yeah, I seem to get on better with the photon one, it gives me a rough idea where I’m at, I’m going by, if it’s not too high at the top bud, and not too low at the bottom bud, we’re all good
And thanks mate for your reply

 

[Gee64]

On October 4th I started my EWC only(ish) trial. I say ish because once the EWC is prepped I will add in 20% used soil for innoculation. I decided to make 2 trays of EWC to give me 10 finished gallons (8-9 gals EWC and 2 gals used soil). So here is what I've started and my plan.

I used 6 gallons of The Answer potting soil, which is my carbon base. It's Canadian Spaghnum and aged forest fines. To that I added 1.5c prilled dolomite, .375c oyster shell flour, and .5c prilled gypsum. I will let it cook for a couple weeks and then I will use it as my worm farm stock to which I will add:

.5c Power Bloom
.5c blood meal
.5c bat guano
1.5c feather meal
1.5c bone meal
.125c srp
1.5c kelp
1c alfalfa
.25c rock dust
.5c dry basmati rice

and use it to fill 2 trays, each 2 weeks apart, and add in kitchen scraps and weed meal.

Each tray takes 8 weeks to go thru the farm so in 12 weeks I will have 8 gallons of EWC with the measured additives of what I would normally use in 1 10gal pot, and I will add in the used soil at the time of potting to make it an even 10 gallons.

Then I'll try it out and see if it works differently than regularly cooked soil.

 

[Gee64]

I got a 12 Brix with a slightly fuzzy line at the 10 hour mark, so some progress, though not as much as I'd like. I had leaf temps 6° lower than ambient (84 vs 90). What does that tell me?

It could be cold water, but likely it means you need more light to drive them harder.

Or it could be that you need better ventilation to lower air temps. 90 is a bit high.

What is the RH in your grow space?

Leaf temps drop quickly so you need to open your grow space and zap a leaf temp quickly.

But then there is the value of using VPD to adjust, as this image demonstrates.

So if you can get your RH to 53 you are golden.

 

[Gee64]

An RH of 55 is even better as it would get your VPD down to 1.33 which is a great sweet spot to avoid stress and leaves room for fluctuations.

 

[Stonecrusher]

Hi Kal, Photon app. I think it's accurate if you calibrate it. The weird thing is you need a source (standard) meter to do it.

You can look around the internet and get reference measurements for most lights. I don't remember where I found it but there was a chart for several of my ViparSpectra lights that made calibrating easy.

 

[Gee64]

I got a 12 Brix with a slightly fuzzy line at the 10 hour mark, so some progress, though not as much as I'd like. I had leaf temps 6° lower than ambient (84 vs 90). What does that tell me?

So close!

Remind us again please Azi, which mix is this?

 

[Gee64]

Hi Gee,
I ordered one when you said about it, and a single ph meter too, from Temu
still waiting, hopefully they should be here within the next couple of days

Excellent! I'm not sure how accurate the PH one is, but if anyone here has the ability to compare it to a good PH reader that would be cool to see.

 

[Thirvnrob]

Hi @Thirvnrob
This is something iv always overlooked, with the synthetic set up it’s not as bad as the living soil, and yes mate I will let them dry out more, and definitely cutting back with the watering too, thank you mate

I read @Emilya Green ’s post on how to properly water a potted plant over & over till I got it right.

 

[Thirvnrob]

If the line is not fuzzy then calcium is low, and calcium always needs to be corrected 1st for optimal results, so I would give them some form of calmag, whether that be from a bottle or home made dolo water. I prefer the dolo water because I always have a 50 lb bag of prilled dolomite laying around, but either would be the place to start. Just be careful. 2 low dose feedings are better than 1 high dose feeding. I would guess that getting that line fuzzier would get you above 15. Probably 16-18.

Hows your tilth?

How is leaf color?

Tilth is great. She just got a dose of calmag a few days ago with a veg tea. I’m top watering all of my SIPs about every 3rd or 4th watering with 4ml per gallon in an attempt to stay ahead of it.
The leaves look like this. Is that mottled?

 

[Kaldean]

It could be cold water, but likely it means you need more light to drive them harder.

Or it could be that you need better ventilation to lower air temps. 90 is a bit high.

What is the RH in your grow space?

Leaf temps drop quickly so you need to open your grow space and zap a leaf temp quickly.

But then there is the value of using VPD to adjust, as this image demonstrates.

So if you can get your RH to 53 you are golden.

@Gee64
What is this VPD ?
Is it on the hub things you get with extractors, or is it a app thing ?

 

[Kaldean]

You can look around the internet and get reference measurements for most lights. I don't remember where I found it but there was a chart for several of my ViparSpectra lights that made calibrating easy.

Do you mean these things @Stonecrusher ?
The phlizon seems pretty straight forward, lost with the maxibright thou

 

[Gee64]

@Gee64
What is this VPD ?
Is it on the hub things you get with extractors, or is it a app thing ?

VPD stands for Vapor Pressure Deficit. It's a fancy way of manipulating transpiration.

Once you control the rate of transpiration you control the speed at which the plant runs.

It's a mathematical equation with 3 variables. Room temp, leaf temp, and RH.

The difference in room temp and leaf temp determined the rate of condensation pulling water thru the stomata, and RH controls the air's ability to wick the condensation away from the leaf so more can condense.

So when you get it right you can controllably control the rate of transpiration.

You can download VPD calculators from the app store to take all the math out.

Then you can adjust parameters to work for your scenario.