Cwrighty9420
Well-Known Member
Gonna adjust ppm to 350 by adding ph water with no nutes
she’s lookin real nice
she’s lookin real nice
first DWC grow
- Thread starter Cwrighty9420
- Start date
Cwrighty9420
Well-Known Member
12 days from transplant
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Cwrighty9420
Well-Known Member
Roots
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HolyAngel
Well-Known Member
yep that's what I'd do. Somewhere around 350 and see what happens in 12-24hours and go from there.
Cwrighty9420
Well-Known Member
Let’s see how she goes!
Cwrighty9420
Well-Known Member
Ppm gone up to 355
Cwrighty9420
Well-Known Member
250watt hps
4 inch extraction
No intake(will fix today)
Sitting around 25-28c
No oscillating fan in the veg tent
Will have when in flower
And I don’t know what VPD is bro
Cwrighty9420
Well-Known Member
I see, Will see where I’m at on the VPD chart in the morning
HolyAngel
Well-Known Member
Gotta make sure any vpd talk is specifically about herb. Here's a decent site
Understanding VPD and Transpiration Rates for Cannabis Cultivation Operations
This article explores how vapor pressure differentials (VPD) affect transpiration rates in cannabis plants. Understanding of VPD at different temperatures and relative humidities, and its effect on this process, is important to gain maximum plant growth.
www.cannabissciencetech.com
Vapour pressure deficit (VPD) in cannabis cultivation
Temperature and relative humidity play an important role in indoor marijuana cultivation since much of the plant's activity depends on these factors. Incorrect values of these two parameters will result in an invalid VPD (vapour pressure deficit), which will in turn result in poor plant...
and the tables
Veg
Flower
There's other tables out there and you can definitely calculate yourself. Having the VPD in the correct range definitely helps and makes a big difference in overall growth.
Cwrighty9420
Well-Known Member
She’s starting to go a bit light green, shall I give her a fresh Rez with fresh nutes and up the ppm a little?
Cwrighty9420
Well-Known Member
Topped up water by 5l
Phd to 6.1
Added a little a+b
Cal mag
Regen a root
ppm of the mix was 595
added the 5l to current rez mixed it around a little
ppm of whole Rez was 395 and ph was 6.2 water temp was 21c Haven’t played with the VPD thingy yet but will get around to it
Phd to 6.1
Added a little a+b
Cal mag
Regen a root
ppm of the mix was 595
added the 5l to current rez mixed it around a little
ppm of whole Rez was 395 and ph was 6.2 water temp was 21c Haven’t played with the VPD thingy yet but will get around to it
Cwrighty9420
Well-Known Member
Ppm back down to 345 plants looking a little pale
mod I just keep the ppm around 350? I’m confused
mod I just keep the ppm around 350? I’m confused
HolyAngel
Well-Known Member
If she went from 395 to 345 in 24hrs, when you top her off i'd up it to 450ppm. If she did it in two days maybe try 425.
Dro3420
Active Member
Cwrighty9420
Well-Known Member
Ah I see she was a little yellow/pale I’ll top her up to 450ppm when I get home
OldMedUser
Well-Known Member
Cwrighty9420
Well-Known Member
So,,, my buckets leaking, got a inch puddle in the tent... 