We are not almighty as your name suggests, Almighty Joshaeus. 7 Zwerge rightly reminds us of the great differences between a twenty liters tank with still waters and a constantly running stream in the dwindling primeval forests of south-east Asia. However, there is one thing that is used by the good breeders: Changing food, suddenly abundant. If you want to instigate a pair to breed, then you organize a big water change in combination with a change in feeding: suddenly there are microrganisms for future larvae and young abundantly around (if you provide them!) and good numbers of good food for the adults. This seems to trigger some reluctant pairs to breed.
And what is the background? It’s just the beginning of the wet season with lots of rain water and an explosion of infusoriae and other small food. By this you imitate something. But it’s limited to a still water tank of twenty liters. Nevertheless, you can do it and by this you apply your knowledge.