Common pH testing mistakes

wrote:
Problems maintaining aquarium pH can sometimes be attributed to
improper testing.

The two most frequent mistakes my customers made were as follows:

1) Do not test water immediately after being drawn from the tap.
For a true reading always let it sit for a day or two before
testing.

2) Do not use your finger to stopper the test vial when shaking.
Your skin's natural pH will affect the reading.

And pH is only one aspect of water quality (not the most important,
either). Be sure to also test hardness, ammonia, nitrites, and
nitrates.

Austin