"Zack Robertson" wrote in
:

After my most recent weekly water change (approx 15%), I noticed that
for the first 5 or so hours after the water change my plants pearl.
This is the only time I ever notice them pearling, aside from when I
first put them in the tank (10 gal) about a month ago. They grow just
fine, but would I ever love to see them pearl on a regular basis.

Any ideas as to why this may happen? The only thing I can think of is
a nutrient deficiency that is supplied by the tap water.

Thanks.

Zack Robertson

BTW - no CO2, no fertilization




Tap water is often loaded with CO2. Sometimes it's purposefully added to
adjust the pH, to create a less corrosive environment within the water
pipes. It is very common for this to happen after a water change. If
you like what you see, start injecting CO2