Sam's started on his second one!
I'm glad he wasn't discouraged by the water change.
This one's not so big yet but in the span of one day it's about the size of an egg!
The thing that gets me about bubble nests is that..well maybe this is just me but I've never seen him actually MAKING it.. it just kind of appears. I'll see him hovering below it quite seriously but I don't see him making bubbles or doing anything, more like he's eye-ing his next move or something.
Then I get up in the morning or come back from work and suddenly its way bigger. It's almost like he waits till I'm gone or not paying attention.