Just a quick question

i just moved and my new well has a ph of 8.6.

just bought some fish and have some currently that their comfort range is 6.0 - 7.5.

fish list
zebra danios
Crossocheilus latius
Bristlenose pleco
Beta fish

1) i am thinking about premixing some phosphoric acid (plant ph down) in to a bucket to bring down the ph. thoughts?

note.. this is not an emergency as i was able to use my old house water for the time being.