Ray- they use Chloramine instead b/c it doesn’t evaporate from the water before it reaches us.
Heidelberg-check your cities water report before buying any filters. Some people are lucky and their city water is good. And I don't know how much chloramine is needed to cause adverse affects on plants. But my city allows a maximum level of 4ppm of chlorine or choramine. And I have no problems. I do use RO water but, only b/c as the seasons and temps change, so does the calcium levels. So I use 12% Calcium Fert-All to add exactly the amount of calcium I want.
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