Sorry for the derail, back on track:
African Cichlids will actually benefit from fluoride in the water as East Africa has very high levels of naturally occurring fluoride in the groundwater.
I traveled to Kenya many years ago and was surprised to see toothpaste advertising that it is "without fluoride". The drawback to excessive fluoride exposure is fluorosis (white spots on the tooth enamel).
African Cichlids will actually benefit from fluoride in the water as East Africa has very high levels of naturally occurring fluoride in the groundwater.
I traveled to Kenya many years ago and was surprised to see toothpaste advertising that it is "without fluoride". The drawback to excessive fluoride exposure is fluorosis (white spots on the tooth enamel).