We TaRdED
Well-Known Member
I think the subject is "Does the low level of chlorine in all municipal water harm plants?" So it doesn't matter that your water is different from his, both of your waters will have varying amounts of chlorine. You're right that the levels are different, but it is possible to answer the question in a general manner.
I would say "No, the low levels of chlorine in tap water aren't likely to harm your plants but the other dissolved minerals might. If you are worried about harming the beneficial bacteria in your soil you can evaporate the chlorine out by letting the water sit in an open container for a day or two or by having an air-pump pump air through an airstone in the water for an hour or two or by boiling the water and letting it return to room temperature. I'm not sure how important beneficial bacteria are to hydroponic grows like flood/drain or DWC, but if I knew I had tap water with low ppm I wouldn't even bother to evaporate the chlorine out. It might even help to prevent root rot. I don't know that for sure, but that would be my guess."
thanks you! much obliged! i have 30ppm out of my tap



