Hello sergentjunk,

Before I was use that tap water on my plants, and before I would drink it myself, I'd have a quick "water analysis" done to see what was in it! Cost is about $50-60 dollars done privately and you my be able to find someplace to get it done free.

You did not say what the source of your tap water is, municipal or private well. Well water is typically high in calcium and other minerals and metals. High enough concentrations of certian substances plus items in your nutes my add up to poor nutrient uptake by the plant. Certian heavy metals present in your drinking water my start you to grow a tail, or other health problems.