How long does it take a male betta to build a bubblenest once he starts?????

Question

Mine just started building his bubblenest, how much longer untill he finishes?

Answer 1

He`ll work on it every day,and do upkeep on it.

Answer 2

He'll keep on building and maintaining his nest and until the next water change.  Building a nest is  a non-stop process for betta.  His work will never be finished.

Answer 3

I've had a Betta for a while, what's a bubblenest and how do they make them?