Planted Tank Enthusiast
Join Date: Nov 2004
Location: Los Angeles, CA
Oops, I think I wasn't clear enough. My tank walls aren't actually pearling (I don't think). Rather, there apparently is so much pearling in the tank, the bubbles (I assume) drift and cling to the walls -- yes, much like after a water change when bubbles cling to the glass, which happens to me, too. I only get the usual minor dust algae on the tank walls between weekly cleanings, but this dust algae is normal, isn't it? I don't think the dust algae is pearling -- but, hmm, I will gently wipe off the bubbles next time and see how they reappear, where they are sourcing from. I'm pretty sure these bubbles still appear on the glass even after I wipe down the dust algae.
I'd have to look at my powerhead configuration -- might be tricky blasting a jet along the whole length of the front tank glass. Not sure how the fish would appreciate a solid blast of water from a powerhead stuck to on the back of the tank shooting against the front pane. I'll tinker maybe.
My best view of the tank is in the morning hours, before pearling really gets started.