i had my water tested at my local marine specialists and my ph was 7.9
It is very difficult to transport water to have it tested for pH. pH, by nature, will drop considerably in a closed container - so the longer you had it in a container on the way to the LFS
, the lower the pH would be.
Also, the less air included in the container, again, the more severe the pH drop.
I'd definitely recommend that you buy a good test kit, and test it yourself, with a fresh sample directly from your tank. pH should be lowest right before your lights turn on, and highest a short time before the end of your photoperid.