Well.....still no bubble nests.
I tried the bottle cap ... Sparkle didn't even go near it.
Tested water...all is fine.
I guess it is because his tank is filtered and the water moves around a "little" bit.
Darn....I loved the bubble nests.
Was thinking of turning off filter for a day or two to see what happens. But maybe nothing will appear ... I bought him a FlowerBall and he spends ALOT of time inside of it....he really likes his 'cave'. Maybe he will build a bubble nest inside of it

I won't be able to see it though.
Sparkle my Betta Boy ... you are soooo spoiled !!!