My rams liked to spawn on the leaves of an Amazon Sword.
I'm sure that you could pull the leaf off and put it in another tank with some of the same aquarium water.
I like using that little nursery because it is in the aquarium that they spawned in with the same water and temperature. It's only $8.49.
Then I put the fry when they're about three weeks old in a grow out tank with a heater and sponge filter plus some Java Moss.
It works well for me.