For the first spawn, I would leave the parents to guard the eggs to see if they are fertile first. It may take up to 3 days for wigglings to appear in fertile eggs. It's no point to do anything more if the eggs aren't fertile, besides it's not possible to transfer eggs from the glass. Once spawn, they will spawn again and again. So wait for the next spawn and place a flat stone and hopefully the parents will lay eggs on the stone. Wait a few days after the spawn, remove the stone with eggs in a pastic bag or container filled with tank water and transfer them to a small tank. The small tank should be filled with the same water 100% from the spawning tank so there will be no shock in chemistry and temperature to the fry. Many times, transfering eggs or fry to the small tank don't make it because of shock from change in water condition.
I have never known flowerhow can spawn with Jack and will be interested in seeing how the offsprings turn out to be.