Hey guys i just tested my ph and it was 8.0 and its supposed to be 8.2 how bad is this....would it cause any fish to die or and new fish i buy to die...everything else was perfect
I don't think it will cause anything to die. You may need to raise your alkalinity a bit to hold a constant pH (but that is not for certain), but generally if the pH is off its because something else is off.
8.0 is fine.
Just make sure you have plenty of waterflow, your skimmer is working correctly, you don't overstock/overfeed, and there's no detritus sitting around rotting.