kribs are west african river species they are not found in the lake. if you trying to breed kribs u will need a ph 7.0 to get both males and females offspring. i forgot which is which but lower or higher ph then 7.0 will give you more or less males. you can keep them in a ph 6.5 to 7.8
Hi Kribs live in soft waters of west african rivers from Benin to Cameroon, they are open substrate pair spawners( the vics are harem maternal brooders) the water should be less than 7 pH with plants and immerged roots.