Soil PH won't go down?

Semper.Fi

Semper.Fi

Well-Known Member
OK so, unless it's picture quality, I think I'm seeing rusting going on from PH lock out problems in the lower leaves!

Am I seeing dark stems to the leaves and dark purple stripes to the trunk???

Magnesium is def. def. in the plant on the right, look at the chlorosis between the veins on the lower leaves . . . .Mg could be locked out.



How do you measure your EC and PH pleasE?




~_
 
Orros

Orros

Member
Semper.Fi said:
Good soil is incredible, I agree with @Vless, it must be buffered to around what ever it is, just because run off is 7.0 doesn't mean what remains in there will be at 7 . . . .biology does crazy things around the rhizosphere . . . . ;)

I'd be feeding and watering twice . . . . . . (But hang on, I do not know the EC of your feed, so I shouldn't comment on schedules)






~_
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I would water twice too, but there was so much deficiencies that people recommend to feed her twice for a while.
I feed between 400-600 ppm, wich would be 0.8-1.2 EC
 
Orros

Orros

Member
Semper.Fi said:
OK so, unless it's picture quality, I think I'm seeing rusting going on from PH lock out problems in the lower leaves!

Am I seeing dark stems to the leaves and dark purple stripes to the trunk???

Magnesium is def. def. in the plant on the right, look at the chlorosis between the veins on the lower leaves . . . .Mg could be locked out.



How do you measure your EC and PH pleasE?




~_
Click to expand...
No you can see well, there's brown spot on lower leaves, 2 yellow leaves that were turning brown crispy because of the over feed mistake I did..
Magnesium is definitly in def. so I bought epsom salt.

And yeah the stem was worst due to P def, it gotten better which is a relieve....

I measure my EC and PH with meters I bought on ebay.

There's about 1/3 perlite and 2/3 soil in the mix
 
Semper.Fi

Semper.Fi

Well-Known Member
Ok, that's a lot of perlite that can hang onto salts!!!!!!

Glad you've got digi meters, calibrate them often??? Or rather, when where they calibrated last?

Epson Salts . . . there is no better source of MG and a bit of sulfur :)

I would make up a balanced 0.6EC feed. Three times the amount you would need, PH it to 6.7, and pass the whole lot through it, over your tub . . . . if I were you. Take readings of what comes out and post . . . .

Or get a flushing agent, GH Florakleen I use .. . ..just water till 20/30% run off, salt gone!!



~_
 
Semper.Fi

Semper.Fi

Well-Known Member
without knowing what is in what is coming out, it's hard to say dude . . . . .

Orros said:
I would water twice too, but there was so much deficiencies that people recommend to feed her twice for a while.
I feed between 400-600 ppm, wich would be 0.8-1.2 EC
Click to expand...
 
Orros

Orros

Member
Semper.Fi said:
Ok, that's a lot of perlite that can hang onto salts!!!!!!

Glad you've got digi meters, calibrate them often??? Or rather, when where they calibrated last?

Epson Salts . . . there is no better source of MG and a bit of sulfur :)

I would make up a balanced 0.6EC feed. Three times the amount you would need, PH it to 6.7, and pass the whole lot through it, over your tub . . . . if I were you. Take readings of what comes out and post . . . .

Or get a flushing agent, GH Florakleen I use .. . ..just water till 20/30% run off, salt gone!!



~_
Click to expand...
Wait, you want me to either feed them or use a flushing agent?
With the 3 hours of flushing, you think I still need Florakleen?

And by 3 times the amount i need, you mean instead of 5 gal I feed 15 gal of 0.6EC balanced nutes?
 
polishpollack

polishpollack

Well-Known Member
Orros, you're going to kill your plant being so worried about pH. Why is it you're convinced that the pH must be at 6.5 or whatever? Look, pH is an indicator of the fert content of the soil. It's not necessarily something you've got to get just right in order to have a grow. Besides, you're testing runoff, not the soil itself. There's a difference, don't you think?
 
akmatanuska

akmatanuska

Well-Known Member
SPLFreak808 said:
If you need the nutrients, flushing the soil is washing away nutrients and the lime that stabilizes the soil when watered/fed which may bring you even more problems if you aren't on top of it! Also, lime will bring the pH up! Not down. Im not really sure what you are trying to do? What is the run-off when fed nutrients? Are you feeding synthetic nutes? If you dont want to use ph up/down or grow organically then you need to figure out the runoff ph when fed. If it is within 5.8-6.5 my bet is you will be fine and do not need any buffers in the soil. It will end up back at 7 when the water dries. The soil ph comes out high on purpose so when you feed the pH drops and raises as it dries.
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He's right lime raises pH. Sulfur lowers pH
 
Semper.Fi

Semper.Fi

Well-Known Member
imho until a good food web is set up, one has to be very careful with soil, as careful as hydro . . . . as far as ph n ec is concerned. BUT I use a light mix all the way through, I amend it with a few bits; occasionally with youngsters, I've been lazy . . . .I've witnessed the laziness 24 hours later . . .

I do not grow fully organic, I use some mineral ferts. I don't have a compost pile etc . . . . but I know my soil garden works at a far better rate when I'm on top of EC and PH levels of everything going in and coming out . . ..

polishpollack said:
Orros, you're going to kill your plant being so worried about pH. Why is it you're convinced that the pH must be at 6.5 or whatever? Look, pH is an indicator of the fert content of the soil. It's not necessarily something you've got to get just right in order to have a grow. Besides, you're testing runoff, not the soil itself. There's a difference, don't you think?
Click to expand...

~ _
 
Semper.Fi

Semper.Fi

Well-Known Member
Choice -

15 gallons each pot of 0.6EC balanced feed flushed through

OR

5.5 gallons of a flushing agent

They'll do the same job, nay, I wager a flushing agent will do a better job.

It must go in at 6.6 to 6.7PH :)


Orros said:
Wait, you want me to either feed them or use a flushing agent?
With the 3 hours of flushing, you think I still need Florakleen?

And by 3 times the amount i need, you mean instead of 5 gal I feed 15 gal of 0.6EC balanced nutes?
Click to expand...

~_
 
Orros

Orros

Member
polishpollack said:
Orros, you're going to kill your plant being so worried about pH. Why is it you're convinced that the pH must be at 6.5 or whatever? Look, pH is an indicator of the fert content of the soil. It's not necessarily something you've got to get just right in order to have a grow. Besides, you're testing runoff, not the soil itself. There's a difference, don't you think?
Click to expand...
Tac, there is. I'm trying to reach the 6.5 ph because people told me it's the best range so the plant get all the nutes propely. Looking at different forum, people who had a runoff of 7 were told to lower their soil ph because it will cause many trouble.
Dziękujemy za pomoc brata :)

Semper.Fi said:
Choice -

15 gallons each pot of 0.6EC balanced feed flushed through

OR

5.5 gallons of a flushing agent

They'll do the same job, nay, I wager a flushing agent will do a better job.

It must go in at 6.6 to 6.7PH :)





~_
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Alright, thanks! Should I do it next time the soil dries or ASAP?
Do you think I just give her a small foliar feed if I clean the soil?
 
Orros

Orros

Member
Here's more clear pictures :

IMG_5104.jpg IMG_5105.jpg IMG_5112.JPG IMG_5114.jpg IMG_5115.JPG IMG_5117.JPG IMG_5120.jpg IMG_5122.jpg

It's 25'' tall, about 10-15'' from the light, can't put it closer it's too hot, I have a 250w MH lamp
 
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polishpollack

polishpollack

Well-Known Member
Here's what I know. If you keep washing water through the soil, there won't be fert left to grow the plant. pH range in soil is 5.8 to 6.8. testing your runoff at 7, this is mostly water. this is the first time in 15 years that I've heard of someone insisting the pH be specific such that they kept washing water through the soil. I think you've been listening to bad advice. it's the fert in soil that causes pH to be what it is. if you wash out more fert, your pH will stay higher than you want. worry more about fert content. now you should let the soil dry out because it's not good to keep it wet for a long period. chances are your leaves will go yellow because of the lower fert content now.
 
Orros

Orros

Member
polishpollack said:
Here's what I know. If you keep washing water through the soil, there won't be fert left to grow the plant. pH range in soil is 5.8 to 6.8. testing your runoff at 7, this is mostly water. this is the first time in 15 years that I've heard of someone insisting the pH be specific such that they kept washing water through the soil. I think you've been listening to bad advice. it's the fert in soil that causes pH to be what it is. if you wash out more fert, your pH will stay higher than you want. worry more about fert content. now you should let the soil dry out because it's not good to keep it wet for a long period. chances are your leaves will go yellow because of the lower fert content now.
Click to expand...
I see, thanks for the advice I really appreciate it!
 
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