In the marine water aquaristic the combined addition of kH+Ca 1, 2 and 3 in a dosing of 15-20 ml/100 l aquarium water per week is recommended.
The liquids have to be dosed separately. Please do not mix in a measuring cup. In case of a combined use of kH+Ca 1, 2 and 3 the ion proportion will not be moved within the marine water aquarium