It's rare that gouramis spawn in a community tank..they really need a tank to themselves(20L works great)..
....The tank needs to be in a quiet area with little disturbance..fill the tank up to about a 10" depth of water, no substrate or decorations(this will aid in keeping the tank clean)..do, however, add a clump of floating watersprite. Also, you'll need to raise the temp to about 80-84F. and make sure the water has very little current if any, I normally dont even add a filter to my breeding tank...but if you want to, you could add a small internal sponge filter. Once the tank is set up and running(make sure to cycle it), you can add the female..to let her get used to her temporary new home.
I might add, that it is a good idea to condition the pair with nutritious food(some live brineshrimp, and frozen bloodworm) in the community tank while the breeding tank is cycling.
The following day, after introducing the female, add the male. Soon they will start to breed, just be patient. The male will begin the construction of the bubble nest and begin courting the female. Once the female has laid all her eggs, the male will then become very aggressive towards her, this would be a wise time to remove the female or the male probably will kill her.
The male gourami will look after the nest and eggs, removing infertile eggs and keeping the area clean, once the eggs hatch into tiny fry, go ahead and remove the male.
This is the time I usually start doing my daily water changes(20% 1st day and 10% thereafter)...just be careful not to disturb the fry too much doing so...but it is important that they have very clean water.
The fry will live off their yolk sacs the first couple of days, then you'll need to start feeding them infusoria and baby brine shrimp...once they start to look like tiny gouramis, you can start feeding them flake food...preferrably one high in protein..just be sure to crush it up some, so they'll easily be able to eat it.
After they have grown to an easily visible size, you can start to look them over, and weed out any deformed or less than desirable fry, leaving only the good quality ones.
Good luck, if you decide to try to breed them.
