Why Does My Ph Go Up Every Day? Will I Ever Stop Adding Ph Down?

KingKushKush

KingKushKush

Member
This happened to me in the very begining of the grow I'm in now all because I was using Tap Water sometimes or all of the time, as soon as I switched to RO water (RO Only, no Tap Water Top Offs Either) my PH stayed stable. Its almost always @ 6 as long as I use the same RO and when I want to drop it to 5ish it will stay there. I always get my RO from the same place, just for fun I tested 3 or 4 RO water sources around my house and believe it or not some were off by over 100 ppms. Find a nice clean place that looks like they change their filters.

All the best,
- KKushKush
 
B

bobbitoblaze

Active Member
you need active carbon filter will lower ph I use Ro filter but as long as you keep adding high ph water it will kieep climbing
 
Z

zman6

Active Member
A noob mistake I made in the beginning was adjusting my PH before adding nutes, my tap water comes out around 7.2 and i would add PH down to get it under 6.0 and then adding nutes, after reading on this fine forum that your supposed to adjust PH after adding nutes I learned that the nutes (I use GH Flora 3 part) bring my tap water down to 6.0 on there own then I just add a little PH down to a sweet spot of 5.8, usually within 24 hours it might creep up to 6.1 so I'll add a few drops of PH down to keep it around 5.8.
 
GreenLegend420

GreenLegend420

Well-Known Member
nostopin said:
I have a 40gal Rez for my flood tray. it only takes about half the rez to fill the tray, but from what i understand the bigger the rez the easier to stabilize the PH and EC/PPM. from the first day i got my nutes up to 850 ppm, added PH down to bring it from 7 to around 5.5 (my meter broke so i'm using the vial and dropper type) i go back 12 hours later and the PH is back up to around 6.5 or 7. it does this when i dont add anymore water or nutes or when i do, it is always up 1 to 1.5 points the next day.

Is this normal? the only thing i have noticed on the plants is a couple of them have some leafs that the edges are curling up. but other than that they look good.
Click to expand...
Is your water chilled? I use 60ml of ph down every week with the rez change. I have to add more every two days right now cause im adding around 4 gallons of tap water a day back in. The ph doesnt change much though unless i add the tap water. I keep the water temps in the high 50's to low 60's.

Edit: just realized this was almost 6 years ago :)
 
NVGrower

NVGrower

Well-Known Member
That was my issue. I got an RO water filter system. If you can't afford that Google 'water store' and get 5 gallon jugs filled with filtered drinking water. Your pH will stablalize a day after your res change from my experience. Tap water is your enemy.
 
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