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