So here's my set up. I got an unexpected spawn today but I thought it was worthy of posting as a tip.
16 quart plastic tub filled halfway
one umbrella plant
lid for the nest
plastic cup with holes
The male was allowed to swim freely in the tub. The female was placed in the plastic cup. They were fed Hikari Pellets and frozen bloodworms for 3 days.
I didn't release my female..she jumped. But if I had I would've done this. Within a few days the male should've begun a bubblenest. When it's a good size you now need to focus on the female. I feed them a lot. Once she looks nice and fat and displays breeding bars (light colored females won't) release her. My pair was spawning within a minuet (I think I looked and she was still in the cup, I looked a minuet later and see them embracing). Sometimes they may get right into spawning...sometimes they don't. A lot of aggression can come out of certain pairs.
The Male Defending His Nest:
Overhead view of spawning tub: