Congrats Greg...and yes parents will most likely eat fry with a new spawn. If the current fry is a good size batch you can siphon and discard new laid eggs...or another option is your 9 day old fry can start feeding on newly hatch brine shrimp and can be moved into their own grow-out tank although some wait till 14 days.
If your tank is large enough you can put in a divider like poet foam.
...Ralph