Fluctuating Ph Levels

[hydrodude]

I dunno where to put this so mods if it isnt in the right spot please move it :-D

 

 

Hello all last night i filled up my 10litre jug with rainwater and tested the PH it came to 6.3 which is perfect for me. So i thought great i am going to start using rain water. Well i woke up this morening and for some reason i decided to test the water again and it came to 7.8 OMFG. I though WOW! whats going on so i grabbed some ph7 calibration buffer and my meter is reading perfect. All i wanna know is has anyone ever had water fluctuate that much overnight? is this normall? is it possible that the plastic container is leeching acidity into my water?

 

 

any help would be very gratefull........

[sweetjane_au]

They say leave your water in a open container overnight before testing. I wouldnt get to worried about it.I have rainwater until drought then had town water delieved for months( or was that years).Now back to rainwater.I dont test anything! havent for about 2 years.

[Guest weekprik]

buy yourself a truncheon.

 

then Ph will level out.

[hydrodude]

I thought a trunchon was a tester not a water changing tool???? am i wrong??

 

 

BTW i have a digital Ph meter ;-)