Water PH rising alot overnight

[ComfortablyNumb]

Carbon does not effect PH.

It gets rid of something in our water that does. whatever that might be.

 

[ComfortablyNumb]

Carbon does not effect PH.

The question 'Does carbon filtering affect water pH?' So as I'm reading, I see one that says it might raise pH because small molecular carbon mixes with water and makes carbonic acid.
The other one says it lowers pH because it captures free carbonic acid. LOL
"Some Scientists agree that the rest are wrong."

 

[ComfortablyNumb]

Just found this at a Carbon lab.
"
DESOTEC QC laboratory: pH measurement


Steam activated or reactivated carbons can have pH and alkalinity spikes of significant duration when placed into service. The pH increase and duration are dependent on the type of activated carbon and the chemical composition of the treated water. The pH of the effluent can rise to a value exceeding 9 or 10 for 200 to 500 bed volumes and can result in the leaching of aluminium from the activated carbon and, additionally, the leaching of manganese and other transition metals from reactivated carbon in drinking water applications."

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[Aqua Man]

The question 'Does carbon filtering affect water pH?' So as I'm reading, I see one that says it might raise pH because small molecular carbon mixes with water and makes carbonic acid.
The other one says it lowers pH because it captures free carbonic acid. LOL
"Some Scientists agree that the rest are wrong."

Carbonic acid will lower ph and the carbon in charcoal take years to break down... its such a negligible amount it's irrelevant.

Co2 is a different story and completely different compound

 

[Aqua Man]

Just found this at a Carbon lab.
"
DESOTEC QC laboratory: pH measurement


Steam activated or reactivated carbons can have pH and alkalinity spikes of significant duration when placed into service. The pH increase and duration are dependent on the type of activated carbon and the chemical composition of the treated water. The pH of the effluent can rise to a value exceeding 9 or 10 for 200 to 500 bed volumes and can result in the leaching of aluminium from the activated carbon and, additionally, the leaching of manganese and other transition metals from reactivated carbon in drinking water applications."

Knowledge Hub

Discover expert resources on air & water purification. Access DESOTEC's Knowledge Hub now.

www.desotec.com

That's not the same type of carbon bro. Even the charcoal in air filters is different than used in water filters.

 

[ComfortablyNumb]

That's not the same type of carbon bro. Even the charcoal in air filters is different than used in water filters.

I'm a Doctor, not a chemist Jim!

 

[Aqua Man]

Now carbon can remove some minerals that effect PH but this is actually negative in these circumstances.... and really will only make any measurable difference in a very alow alkalinity water. Carbon for the most part only removes VOCs effectively.

 

[Aqua Man]

I'm a Doctor, not a chemist Jim!

I'm not either but do have a fair bit of experiencein using carbon filtration. But when you said that carbon filters will fix ph issues I didn't want someone going off buying a carbon filter thinking this will actually solve thier issue.

 

[ComfortablyNumb]

I'm not either but do have a fair bit of experiencein using carbon filtration. But when you said that carbon filters will fix ph issues I didn't want someone going off buying a carbon filter thinking this will actually solve thier issue.

I thought I said exactly the opposite... Wait... *checking*
Nope. Not what I said. I'm pretty careful never to say this one thing is it for sure. Even when I do know because there could be mitigating circumstances.

 

[Aqua Man]

I thought I said exactly the opposite... Wait... *checking*
Nope. Not what I said. I'm pretty careful never to say this one thing is it for sure. Even when I do know because there could be mitigating circumstances.

This is exactly why we carbon filter. The water was not being cooperative. We pH'ed both directions constantly in our first indoor grow. It was maddening. Finally, we started carbon filtering the water and the problem vanished. With the carbon filtering and the organic grow, we haven't had a pH problem since.
I don't promise it will fix your grow, but it got rid of some nasty problems for us.

So I'm just gonna ask. The statement "this is exactly why we carbon filter" is meant as?

And to add the carbon PH you linked is reffering to before its saturated and rinsed. Which is why every carbon filter sold is required to be flushed prior to use.

Once a quality carbon is soaked and rinsed it does not effect PH. It is absolutely piss poor at removing minerals and is effective in removing VOCs like chlorine. It's impact I'm alkalinity is virtually unmeasurable by ph. So I have no idea how you are seeing any change to your ph unless also running other filtration such as RO.

I'm not trying to be a dick but rather share some information so you may look for another source for the improvement you see.

It's not a passing competition It's about understanding and information.

 

[ComfortablyNumb]

So I'm just gonna ask. The statement "this is exactly why we carbon filter" is meant as?

And to add the carbon PH you linked is reffering to before its saturated and rinsed. Which is why every carbon filter sold is required to be flushed prior to use.

Once a quality carbon is soaked and rinsed it does not effect PH. It is absolutely piss poor at removing minerals and is effective in removing VOCs like chlorine. It's impact I'm alkalinity is virtually unmeasurable by ph. So I have no idea how you are seeing any change to your ph unless also running other filtration such as RO.

I'm not trying to be a dick but rather share some information so you may look for another source for the improvement you see.

It's not a passing competition It's about understanding and information.

Not at all my friend.
I was talking about this line:

"I don't promise it will fix your grow, but it got rid of some nasty problems for us."

 

[ComfortablyNumb]

Point made though. I'll try and preface better.

 

[Flexnerb]

At 0.1 EC I'd say it's more than likely your alkalinity is to low. Thats 50ppm

Too bad there isnt a soluble product we could buy that has alkalinity in it i.e. mg and cal...there was a natural well being site something of the likes of dr mercola that sold it in cases of packets. You just add it to RO water and drink...30 to a case.....i had a li k to it but can never find it....i must have 2000 bookmarks. .......lol

 

[Flexnerb]

Water comes out of tap at around 50ppm
Temp is good (tho i dont have a thermometer it feels chilled)
I'm using an airstone to keep water oxygenated and moving
My water is directly from a river, tho It goes into a reservoir first I believe.

Jes getting his water from field run off? River? Rivers in my neck of the woods are all from fileds fpr the most part...what supplies your rivers water? Is it from field run off...that might have something to do with it...im no water guy but it could be....water pulled from under ground goes through calcium mg and other elements that give us our alkalinity river water most likely wouldnt have that right?

 

[Flexnerb]

You can also maybe get remineralizing cartridge and run your water through that with a pump recalculate? Womder if that would help at all....you have very little alkalinity. You need to almost triple yours maybe quadruple it...just ideas

 

[Aqua Man]

Potassium silicate, Potassium bicarbonate, calcium carbonate, Potassium Hydroxide... there are tons bro.

 

[AZsunfarmer]

I have a problem with my water that I've pretty much had for 2 years now but seems to be getting worse.

So my tap water comes out of the tap about 7.2ph. If I just leave it in a cup and test it the next day it will be 7.8, maybe two or three days later it might be over 8!

When filling my tank I leave it for 24hrs for chlorine to evaporate before adding any neuts. I add neuts and set the PH to near 6. 12hrs later it will be 6.5-6.8. 24hrs later it will be 7.2-7.8.

Yesterday I set the tank to 5.7 and fed plants from the bottom so the water would pool and I could test ph the next morning. I've just tested what's left in the bottom of the trays and its 6.5, after 12hrs.

I just dont understand what is going on, I've bought a 2nd ph meter because I thought it might be that. Both ph meters are calibrated and show a deviation of 0.2 ph between them.

My plants are slowly going yellow (light green atm) looking like lack of nitrogen with stems turning purple as well. I think it's to do with the PH as the plants are only getting the correct PH for less than a day and then the coco PH is above 7 again and I'm getting lockout.

Anybody got any ideas or suggestions as to what is going on? Anything i can add to water to stop ph rising? I can only theorize that the water company is adding some sort of PH stabilizers as this problem only started 2 years ago.

Any advice would be appreciated, thanks.

 

[AZsunfarmer]

Lol, pool owners would be good hydro growers! A big bag of baking soda from Costco keeps a pool pH in check.

 

[Flexnerb]

Isnt sodium bad for plants?

 

[Habosabin]

I think when the solution absorbs co2 or gasses off things the pH changes. Like when distilled water sits out it absorbs co2 and ph drifts.