yo bro used to have the same problem as you , read carefully and it say it raise ph from 8 to 8.3 so i empty my bottle then also still 7.8 now i switch to seachem buffer 8.3 .
it better as there some trace elements in there and most impt it raise my 7.8 to 8.3 ph hope this helps ya
think the aquafarm only condition the ph 8 to 8,3 and does not help to raise much ph