for future preference's:
why do you remove them after 3days of free swimming? The cichlids are great parents? I suspose tankmates come into the equation, But how do they do? I was considering removing my kribensis fry afte they became free swimming but didn't have a heat source. When I put them into a floating breeding tank, they seemed lost and bewilderd so I put them back with their parents.
What I want to know is why? and where do you move them to? i.e 5gal with light filtration or none?
as for fry getting crushed by gravel. I had the same problem and would most certainly lost 10+ fry that way, so I changed to a smaller pebble and so far things are looking better..only lost 3 since the gravel change I think to the algea eater's...though 1 got sucked up by the filter as I was doing a water change...:'( *cries*