The problem I'm having with tap water and chlorine, is I'm running no till. I'm afraid of build up of calcium, in my soil, from the tap water, and I'm afraid of killing off beneficial soil microbes by adding chlorine. I don't believe the soil will get better over time, if I keep adding chlorine to the res. If I was recycling soil, then it probably wouldn't hurt, which is probably going to be the way I go from here on out. I feel like the em1 and labs, is just going to be like running hydroguard in hydro.