I use Hornwort trimmings. Hornwort is a cheap plant that grows like a weed, and the fine leaves make for an excellent base for a nest and fry. I just recently had a pair of dwarfs spawn for me, but it took a while. My male is particularly territorial, and when the female was introduced (after he started building his bubble nest for the umpteenth time after it was broken by water changes

), he didn't like her. At all. It was beyond normal chasing and he was rather aggressively going for her fins. So I had to remove him for roughly a week and let the female establish herself first. When he was reintroduced, there was still some chasing for a few days, but nothing too bad, then walah they spawned. I did not change the temperature of my tank (my heater is one of those presets with no dial for adjustment - permanently set to about 78) or lower the water level as is often recommended.
I removed the female immediately after (they were alone in a 10 gallon tank, aside from some Otos), and I admit, I accidentally messed up the bubblenest. However, despite that, most (if not all) of the eggs did hatch and I have more little black wriggly specks in that tank than I can accurately count atm
Dad is still busy taking care of his babies (which hatched probably sunday afternoon or maybe this am or so since they spawned saturday evening). In a couple days I will offer some food, see if he has an interest in eating or not. Once he starts showing that interest, I will probably remove him as well, as by then the fry are likely to be free swimming. Each male is different. I had a male Paradise Fish that would continue to care for his young for over a week! But you have to watch him carefully as eventually he will grow tired of trying to keep his young in their nest and will just start eating them instead.
It should also be stated that sometimes, certain fry grow much more quickly than others, and may in fact start eating their smaller tank mates, so a seperate grow out tank or two would probably be good to have in case this happens to you.
Other than that... I can't offer much insight that the aforementioned article can I don't think
