cacl2 dosage

Hi all

I wonder how much chlorine is too much for cannabis. I use 0,1g/l cacl2 (36ppm Ca, 64ppm Cl) in the past few weeks. I want to boost ca without adding N. Any other suggestions. CaSO4 is insoluble, like CaCo3. Am I right? Im in DTW hempy perlit.

I would be careful about using calcium chloride for plants. It's also known as road salt.

Use a limestone product instead for raising calcium levels. It's much safer.