Good news I had a very nice hatch of 25 to 30 Kribs 2 weeks ago and it was all natural.
This is at 4 days old
This was 2 days ago and over double in length.
The flower pot started out sitting on top of the sand and it sank slowly as the parents kept digging out the inside, I think it is sitting on the bottom of the tank now.
The bad news is when they spawned the male took out a 3" angel 2 gold rams and a clown pleco in 2 days. I also had to move the other kribs out of the tank. I know this unusual as this is a 75g tank with an 18 by 48" footprint.
This is at 4 days old

This was 2 days ago and over double in length.

The flower pot started out sitting on top of the sand and it sank slowly as the parents kept digging out the inside, I think it is sitting on the bottom of the tank now.
The bad news is when they spawned the male took out a 3" angel 2 gold rams and a clown pleco in 2 days. I also had to move the other kribs out of the tank. I know this unusual as this is a 75g tank with an 18 by 48" footprint.