do you need a monthly subscription for this? or just upfront cost?
so just wanna get this right for my to test alk, calk mag etc i need the ion director, KH Director and a GHL doser? what is that like 1200 bucks?
Upfront cost + reagent/calibration fluid cost.As a minimum, ION Director, KH Director, Stand Alone Doser, and slave doser.