I love your Rams! They are my favorite.
Mine actually spawn in my substrate usually and the pair will get very aggressive when defending them. My poor mystery snails take a beating if they venture near the eggs.
Just leave the eggs in there, they will defend them. Wigglers will appear soon and turn into fry, once they are free swimming you'll want to take them out or else they will be snacks of the other rams in the tank.
Last time mine spawned, the male chased away the female once they became free swimmers and I neglected to take them out of the tank. Needless to say they were gone in the morning, I suspect the female but I'm not sure.
If you keep your PH around 6.5 - 7.0 and your water temp around 80-82 they will spawn frequently.
Good luck, your tank is beautiful!