Ph is too high.. HELP ME PLZ!!!!

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Defcon9

Well-Known Member
tyke1973 said:
7 Is fine for a soil base grow i know that flushing the plant's is a pain in the neck but do what i do_Once a week i flush my plant during flowering/Once every 2/3 week during the veg period.This will get all the salt build up out of the soil mix.By flushing once a week during the flowering period the plant's will realy thank you for it i call it the greenhouse way because this is what the guys at greenhouse seeds do.Make sure that when you flush the plants that you do it till yhe water runs near on clear let them stand for a hour or so then add about 3 litres of water/feed to each plant if they are in large tubs.By doing this you are not haveing feed that has been made up and left to stand,This will higher the ph even if a fish pump and air stone is added.Put the feed in a bottle fill just short of the top make sure that the ph is bang on if you are gonna grow with a ph of 7 then make sure it is 7 all the time.Or you may suffer from ph fluxtuation shake the bottle for around 5 minutes this will airate the water then poor this 3 litre of feed on to the soil.You will only have to feed once a week by doing this perhaps twice if it has been warm.
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Wow you seem to flush a lot then, but hey if it works for you. I just always allow for a 10% run off to keep the salts in the soil down. Like I said if it works good for you though, then great.
 
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Defcon9

Well-Known Member
smoker715 said:
the ph in the soil mix is about 7 right now, so i shouldnt worry bout that? cuz i am. i think i added to much lime n thats why it wont go down like it should.. i have some sulfur ph down do u think that will help lower it?:confused:
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You want to water in soil at ph of about 6.0. 7.0 is okay but on the high side. Just remember that for every number you change it is 10X more acidic or alkaline. 6.0 is better than 7.0 in soil and is 10times more acidic as well. If your run off is as low as you say (5.?) then something is wrong. Either you ph before you add nutes, or there is something really acidic in your soil. The fact that you added lime dolimite to your mix should case your ph to either stay the same or go up.

Water with ph 6.0 and your run off should be just over 6.0 if anything.
 
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born2killspam

Well-Known Member
Defcon9 said:
You want to water in soil at ph of about 6.0. 7.0 is okay but on the high side. Just remember that for every number you change it is 10X more acidic or alkaline. 6.0 is better than 7.0 in soil and is 10times more acidic as well. If your run off is as low as you say (5.?) then something is wrong. Either you ph before you add nutes, or there is something really acidic in your soil. The fact that you added lime dolimite to your mix should case your ph to either stay the same or go up.

Water with ph 6.0 and your run off should be just over 6.0 if anything.
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Yes thats true about how pH works, but you'd be amazed at how easy those magnitudes change.. What matters is that change I tell you.. That will tell you about the buffering capacity of your rhizosphere, and that is key, because buffering capacity will help with keeping a stable pH even if the water you use isn't exactly proper.. That being said, adding water in the desired only pH range will help to maintain that buffering capacity, but watching how drastically pH maladjusted water responds can tell you alot about the soil chemistry..
Thats why lime is important even when your water pH tends to climb due to hardness etc.. Counter those Ca/Mg compounds with phosphoric acid, and the result is a bunch of compounds that tend to 'hold' pH within a certain desired range.. Aquarium enthusiasts understand buffers, and LeChatalier's principle.. Anybody in this hobby can only benefit by understanding them as well.. Its simple, and complex at the same time.. Its material thats typically covered in senior HS chemistry, then actually taught thoroughly in 1st yr university.. But really its understandable as soon as pH itself is understandable..
 
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Defcon9

Well-Known Member
born2killspam said:
Yes thats true about how pH works, but you'd be amazed at how easy those magnitudes change.. What matters is that change I tell you.. That will tell you about the buffering capacity of your rhizosphere, and that is key, because buffering capacity will help with keeping a stable pH even if the water you use isn't exactly proper.. That being said, adding water in the desired only pH range will help to maintain that buffering capacity, but watching how drastically pH maladjusted water responds can tell you alot about the soil chemistry..
Thats why lime is important even when your water pH tends to climb due to hardness etc.. Counter those Ca/Mg compounds with phosphoric acid, and the result is a bunch of compounds that tend to 'hold' pH within a certain desired range.. Aquarium enthusiasts understand buffers, and LeChatalier's principle.. Anybody in this hobby can only benefit by understanding them as well.. Its simple, and complex at the same time.. Its material thats typically covered in senior HS chemistry, then actually taught thoroughly in 1st yr university.. But really its understandable as soon as pH itself is understandable..
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Yeah. I'm just confused at what he's got in his soil. He said that he added dolimite lime to his mix and waters with ph 7.0 and run off is in the low 5s. That is weird, there has to be something in the soil that is dropping the ph dramatically. Even the Dolimite lime, which buffers, cannot counter it. If the ph is in the low 5s lets say in the water the dolimite lime should raise this ph up. When watering with 7.0 there is no way he should be dropping that much. Either there is something in the soil that is really acidic and dropping the ph or he is ph-ing the water before he adds nutrients and the water is actually lets say in the 4.0 - 4.5 range and the soil is doing it's job and rasing up his ph.
 
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born2killspam

Well-Known Member
It just occurred to me to ask if there is a water softener system involved here.. I read what he said earlier about pH dropping to mean that it was a temporary thing that doesn't occur anymore.. I've seen that happen, I always assumed it boiled down to A/B conjugates (I'm assuming you've got a post secondary or eqv chemistry understanding given what you said, correct me if I'm mistaken)..
I have seen more than a couple situations where the soil drastically acidified any water run through it, but it was way back in university when I knew alot of ppl with hopeless hobby window plants.. Alot of them had MG 15-30-15, and nothing else, (it was funny how common that was), and when that was (over)used as the only fert the pH consistently dropped, new growth was thinner (almost looked more sativaish, but had the mildest cupping), and went necrotic from the tips backwards and from the bottom up on fan leaves..
 
smoker715

smoker715

Active Member
Defcon9 said:
Yes translpnat them into larger pots and your yellowing leaves will probably go green again in a week or so. They will start to grow like crazy when they can let their roots spread out.
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well i just transplnated them into bigger pots, some leaves are slightly yellow yet so will see what will happen. i tested the ph and its still at 7. still frustrated on how to get it down to bout 6.5..:confused:
 
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