PH dropping daily

[Ycfro]

HI everyone, I'm about 6 full weeks into flower, my ppm is static, water level dropping slow, but my PH drops 0.8 daily for the last few days.
I've adjusted and added straight RO water,ppm is staying around 600, hasn't really moved at all. My roots seem fine, nice and clean.
Any suggestions? water temp is 68/ rh 50/room temp 69.

 

[Mark Gordan Smith]

Maybe you've posted up info elsewhere......
But right now:
Strain?
Medium?
Indoor - Outdoor?
There are knowledgeable folk in here but lets cut out some of the guesswork!

Oh...and welcome to the 420 forum, I'm guessing that has not been metioned yet.

 

[Chris Scorpio]

What ^^^ said

 

[Ycfro]

Maybe you've posted up info elsewhere......
But right now:
Strain?
Medium?
Indoor - Outdoor?
There are knowledgeable folk in here but lets cut out some of the guesswork!

Oh...and welcome to the 420 forum, I'm guessing that has not been metioned yet.

Sorry, I have posted elsewhere, wasn't thinking.
1st time rdwc
Strawberry/Banana and Black Domina and Green Crack
1000 w HPS
RDWC 5Gal Buckets
Room temp 71
res temp 68
RH 50
G H flora series (at half or less strength) around 600 ppm
cal/mag
flora plus
kool bloom
Z9
The plants are doin ok ,but this ph dropping is new, any advice to get me through the next 2/3 weeks, would be greatly appreciated.

 

[Chris Scorpio]

Water pH
Tap water or?

If tap what's the ppm of it

 

[Ycfro]

Water pH
Tap water or?

If tap what's the ppm of it

RO water Chris, PH doesnt seem to matter where I start .... 6.5 it drops to 5.7 in 1 day, then next day it'll be 4.9.
The res usually has been 5.6 and rising slowly to 6.4 and that takes a week. then I change solution.

 

[Dusted]

I had the same problem with GH Flora series, so I switched brands. GH uses ammonium salts in their N formulation which causes this. Change the nutrients when the pH gets below 5.5. And you will be fine.

 

[Ycfro]

thx D.

 

[Chris Scorpio]

I use GH Flora Trio, no issues at all

So I'd suggest it's not the nutes

A big rezz can change a lot... Let the water sit, and the nute combo after , overnight

I'm only doing like 5g at a time...and no issues

 

[Dusted]

I use GH Flora Trio, no issues at all

So I'd suggest it's not the nutes

A big rezz can change a lot... Let the water sit, and the nute combo after , overnight

I'm only doing like 5g at a time...and no issues

Chris. Do you add bacterial and fungal spores, such as Great White?

 

[Chris Scorpio]

Chris. Do you add bacterial and fungal spores, such as Great White?

No..... I do run hydroguard and or z7, both early in veg, hydroguard only in flower

Can't see a bacterial makes sense since u change the water weekly

 

[Ycfro]

Chris. Do you add bacterial and fungal spores, such as Great White?

No nothing added.
I am using Z9 part 1and 2. at 15ml for 30 gallons. which has work perfectly, no build up of any kind.
I did recently add floralicious plus ,( I know now its organic and apparently shouldn't use it) So its not in the new batch I just mixed up. It's sitting till tomorrow and then I'll change it out.
new mix ppm420/ph6.3 I'll compare those readings in the morning.
thank you for taking the time to try and help.

 

[Ycfro]

No..... I do run hydroguard and or z7, both early in veg, hydroguard only in flower

Can't see a bacterial makes sense since u change the water weekly

Hey Chris, hope everything is growin fine. Just a quick question. Will I be alright running Z9 and UC roots together?
And why do you stop Z7 in flower? (just curious)

 

[Chris Scorpio]

Hey Chris, hope everything is growin fine. Just a quick question. Will I be alright running Z9 and UC roots together?
And why do you stop Z7 in flower? (just curious)

No clue on UC roots, so can't comment

No real reason I stop... Sometime I don't
I run both in summer when my rezz is ambient temperature at about 78f