Adding Salt to Tank Slowly?
I am making a blackwater biotope and intend to have killifish. I currently have a trio of Fundulopanchax gardneri innidere in the tank that is doing well and I am soon adding a pair of Nothobranchius cardinalis.
The tank is unplanted, but filled with branchy manzanita. Tomorrow I will cover the bottom of the tank with tons of indian almond leaves.
What is the best way to add salt to the tank? Can it be just kosher rock salt (100% salt)? Should I add a few teaspoons a day until at the desired level for the Nothobranchius? Can too much salt cause issues for the Fundulopanchax gardneri?