why is my ph climbing ?

Ok I use maxibloom and dry ph down with tap water in my res, I have an air pump running at all times and its ran to water each plant once a day with spaghetti tubing, anyway there is no return to the res, so how come every day when I get home my Reservoir rises anywhere from .9 to 1.2 points in ph ? Thanks

oilfield bud said:

Ok I use maxibloom and dry ph down with tap water in my res, I have an air pump running at all times and its ran to water each plant once a day with spaghetti tubing, anyway there is no return to the res, so how come every day when I get home my Reservoir rises anywhere from .9 to 1.2 points in ph ? Thanks

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Do you mean your EC is climbing? ph of .9 is like battery acid dude

Hmm...
How much water are your girls drinking per day? Is your ppm rising too? I have seen my ph rise before when the ladies are drinking more water than they are eating food. Thus my ppm and my ph rises together because there is a higher concentrate in the solution of nutes and my nutes just so happen to raise the ph.

redi jedi said:

Do you mean your EC is climbing? ph of .9 is like battery acid dude

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I think that @oilfield bud is saying that his ph is RISING by .9 to 1.2 each day...

oilfield bud said:

Ok I use maxibloom and dry ph down with tap water in my res, I have an air pump running at all times and its ran to water each plant once a day with spaghetti tubing, anyway there is no return to the res, so how come every day when I get home my Reservoir rises anywhere from .9 to 1.2 points in ph ? Thanks

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Pretty normal for well water IMO. It will also raise if any water is added from an ac or dehumidifier. I'll set mine to 5.5 and come back and it'll be about 5.8 to 6.0 24 hours later.


Also dry ph down absolutely sucks IMO. I recommend you try some liquid bluelab ph down and see if that helps.

AKGrowAreo said:

I think that @oilfield bud is saying that his ph is RISING by .9 to 1.2 each day...

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Fuck man, I need to put this joint out....

redi jedi said:

Fuck man, I need to put this joint out....

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hehe. just pass it to me instead

Lmao yes it goes up bout 1 point per day, and it can't be that they are drinking 2 much water bc there is no return to the res, I have about 15 to 20 plants that are in a closed tray with drippers ran to each plant, I feed about a solo cup a day right now, the plants where vegger a month in a 4" rockwool cube and then stacked on 2 to 4 more cubes for flower,

To be honest I haven't checked ppms since my first grow.

But I do now my city water is usually in the high 400s for ppms

oilfield bud said:

Ok I use maxibloom and dry ph down with tap water in my res, I have an air pump running at all times and its ran to water each plant once a day with spaghetti tubing, anyway there is no return to the res, so how come every day when I get home my Reservoir rises anywhere from .9 to 1.2 points in ph ? Thanks

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Sounds like you need an RO water filter and the neuts will knock the pH down and as the plants eat the neuts the pH rises. Tap water can cause big pH swings too.

Ok but the plants never touch the res, I just fill it up every couple days when it runs out. But ya, im betting its my tap

ph naturally rises in ALL systems. After about 5 days the ph will become stable. If you're using RO water I'm not sure because I've never really used it enough to know. But in all systems, for the first few days the ph will rise. Now, if ppm is going up, that would drop you ph, so that's not the case. I don't know anything about ph powder, but i do know that Advanced Nutrients ph down and up is the best on the market. Get some of that, be careful it's potent, and the absolute best for your money.

How long has your ph been rising more than .3 in a single day? If it's been rising consistently that much for over 5 days then there is obviously something wrong.

oilfield bud said:

Ok but the plants never touch the res, I just fill it up every couple days when it runs out. But ya, im betting its my tap

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I agree. 400 ppm out of the tap is pretty high. RO may fix your prob. Have a good one!

My tap water in multiple locations range from 70-120 or so. You can get a jacuzzi filter for $20 that goes onto the end of your hose. Its meant to fill with clean water. Works great but takes everything out. So you may need some calmag. Rockwools not nearly as bad as hydroton. Other than that its a normal issue. I fill n set all of mine at 5.5 every week. Its always at 6.0-6.3 next week. I would also suggest the liquid pH down next time. Way easier to measure.