Sorry, some very stupid mistakes in my typing there.
Here is the revised version of that reply:
To stop a filter sucking up fry, put some pant-hoes (not sure of spelling) over the intake.
I would also suggest no gravel in the fry tank, just for ease of cleaning and observing.
Thing with a tank the size of 29 gallons is, it will be harder for the fry to find the food. But if that is all you have around, it should do fine.
Keep the temperature a few degrees higher than their parents’ tank.
Also, two plants i would really recommend.
Firstly java moss for all types of fry. Fry are able to retreat into it and find microscopic food sources in it. Secondly some sort of floating plant, for as the young grow, like in the wild, they use the leaves and roots of floating plants to feel secure and safe. They will also block out light.