Im wondering if anyone on here who has Malawi African Cichlids uses the African Mineral Salts to harden the water ? My ph out of my tap is 7.2 and his soft water. I have aragonite sand so that keeps my ph at a 7.8 but I also use the African Mineral Salts to harden the water. I use Seachem Malawi Cichlid Salts. Question is do I really need them ? Is it really necessary ? Im wondering if anyone else on here who has these type of fish use the Mineral Salts ?