According to this article, http://www.cichlid.nl/Cichlids of Central America/Main.htm , Lake Nicarqua has a pH 7.5-8.8 , KH 2-4.5, and GH 25. So the alkalinity is up there with Lake Malawi and somewhat lower than Tanganyikan. In comparison, the African rift lakes have the following parameters:
Malawi 6-8KH 7.7-8.6pH 6-10GH
Tang 16-19KH 8.6-9.2pH 11-17GH
Most CA cichlids require alkaline water like Rift Lake cichlids. I keep mine in 75 gal tank at the low end of aklainity of pH 7.4 and GH 12 .
Malawi 6-8KH 7.7-8.6pH 6-10GH
Tang 16-19KH 8.6-9.2pH 11-17GH
Most CA cichlids require alkaline water like Rift Lake cichlids. I keep mine in 75 gal tank at the low end of aklainity of pH 7.4 and GH 12 .