There isn't much info on breeding these guys, if it were me I'd probably treat them in the same way I would corys. IE, put them in a small substrateless tank with a sponge filter. Then feed liquifry.
I see where wills is coming from...I would like to see pics of the parents too if possible. And did you actually see them spawn? Or are you guessing they were clown eggs?
If you're just guessing then what else was in the tank at the time the eggs were laid?