Just wondering why ph jumps

[KingEye386]

I apologize if this isnt the right place to post this..
2 days ago I ph my water to 6.5 and last night before I watered I checked ph and it was at 4.8.. what's up with that?

 

[BobThe420Builder]

Ummmmmmmm

Rezz?
Bucket of plain water?
Tap water
RO water

Help us out here

 

[KingEye386]

Dechlorinated tap water, with 15ml of molasses.

 

[Red Eyed]

Buffers? Calibration wrong on meter. Acid rain affect...

 

[KingEye386]

Buffers? Calibration wrong on meter. Acid rain affect...

I calibrate meter daily before each use

 

[Boru420]

not sure chlorine is high in ph maybe your ph has lowered because the chlorine has evaporated out of the water, just a guess. bit of a drastic drop though.

 

[BobThe420Builder]

Water, tap water, will reduce in oh after a day or two

Most also have buffers that will wreak havock on your ph

 

[Red Eyed]

When I ran dwc, I would premix 10 gallons of nutrient mix each week for top ups.....On day 1 the PH with nutrients and cal-mag would be at 6.0.-6.5. I use normal tap after 24 hours of sitting. By day 3, my PH would drop to around 5.5. By day 7 around 5.0 so I normally would have to adjust UP by later in the week.

 

[RadicalRoss]

Yeah, it usually takes me a few days to get my tap water pH stabilized. Thankfully "good enough" has been good enough, for the most part.

 

[twentyeight.threefive]

I calibrate meter daily before each use

That's seems a little obsessive.

 

[KingEye386]

That's seems a little obsessive.

Might be, but since I've been having that problem I been checking daily.. plant is cut and harvest. Idk what happened tho all my other plants are doing great..

 

[KingEye386]

Thank you all for the advice. Chopped her down..