Fairy Cichlid Neolamp in Acid Tank?

Has anyone ever kept a Neolamprologus sp? in a CO2 injected
high light 29C tank? The pH is around 6.6 and gH is between 6-10
(coral chips in the filter).

I just have to separate them from a smaller tank. Two of the Neolamp group
have chased the other three and seem to pair off. I have to remove the
rest but not so willing to set up another tank and I have a fairly empty (3
Ottos)
2-feet lightly planted tank standing by (as mentioned in the earlier
paragraph).

Any advise will be appreciated