storeing ph,d water ?

Going on a Business trip in a few weeks and was wondering If I PH 10 gallomns of water to 6.5 before I leave so a friend can water the girls, will the ph levels change with the water just sitting in a bucket ?

it wont change and if so by only .2 max so u will be fine.

you get self feeding systems that hold more than that so yer water etc .will be fine