Nute issues DWC

[shiva71]

Hiya
Having some issues with my grow, it just keeps throwing curved balls at me.
Basically - i had what looked like nitrogen toxicity. So she had a 2.5 flush in just pHd water, she looked pretty bad towards the end of that. Ppm stayed the same, i thought it might rise as she puked out the excess N. About 6 hours ago she got a new tank with 450ppm of AH Bloom (0-5-5) specially chose that as it had no N. 450 seemed like a reasonable strength feed after a flush.
And now, in 6 hours pH 5.9 risen to 6.6, ppm 720 to 800. I dont get it, she was starved for 2.5 days why isnt she feeding???
Any ideas whats going on?
Cheers!!
View attachment 4492037

 

[myke]

The ppm rose maybe because the flush never removed all the build up?What is your light and how close?Roots also,how do they look?pH rising is normal for me on a new batch of nutes.

 

[rkymtnman]

I dont get it, she was starved for 2.5 days why isnt she feeding???

she should be. did you change the water at all during the flush? sometimes when i do a 24hr flush, i change the water after the first 12.

 

[shiva71]

The ppm rose maybe because the flush never removed all the build up?What is your light and how close?Roots also,how do they look?pH rising is normal for me on a new batch of nutes.

Basic QB288 its about 20" from canopy at the moment. Roots look ok i think. Tbh i did want to continue with the flush, the clawing was receeding, but she looked so bad i thought she really needs feeding.

she should be. did you change the water at all during the flush? sometimes when i do a 24hr flush, i change the water after the first 12.

Nah dont think so...
Those ppm numbers i gave arent right, water is 130 shes at 300 now.
Cheers!

 

[Airwalker16]

Basic QB288 its about 20" from canopy at the moment. Roots look ok i think. Tbh i did want to continue with the flush, the clawing was receeding, but she looked so bad i thought she really needs feeding.
View attachment 4492051

Nah dont think so...
Those ppm numbers i gave arent right, water is 130 shes at 300 now.
Cheers!

Roots look quite healthy. I think you're in good shape.

 

[shiva71]

Yeah not too bad. Ppm stable after 5 hours, hopefully that will drop and i can throw some more nutes at her.
Cheers!

 

[shiva71]

Dammit ppm up from 300 to 380 overnight. Before these hassles she was up to 800 so I don't know what is going on.
Maybe she is still puking out the N?

 

[myke]

Dammit ppm up from 300 to 380 overnight. Before these hassles she was up to 800 so I don't know what is going on.
Maybe she is still puking out the N?

Are you taking a sample out then testing or putting the meter right in the bucket?Moving water will fluctuate the reading.

 

[shiva71]

Are you taking a sample out then testing or putting the meter right in the bucket?Moving water will fluctuate the reading.

I scoop up a cupful and test that.
I had to go out earlier and i just thought screw it, im gonna zip the tent up and let her be. And when i got back 5 hours later she actually looks better than she has done for a long time so im not gonna change anything! You can see the clawing lower down, thats what made me think she had
N toxicity but new growth up top looks promising.
Cheers!!

 

[GBAUTO]

Just out of curiosity, how much is the rez level dropping between readings?
I'd always get a ppm spike as the plant transpired water.

 

[shiva71]

Just out of curiosity, how much is the rez level dropping between readings?
I'd always get a ppm spike as the plant transpired water.

Difficult to say cos that's not something I monitor, I probably should.
Biggest concern atm is that she's not feeding with the flush that's like 4 days. I have some cannazyme, canna boost, cal mag etc...in thinking if she's not sucking up the P/K (that's all that's in the AH bloom I'm using), maybe she might feed on something else?
Cheers!