I read through again and you have HPS light. Try backing that way off. The leaves can do that to try and save water. Or could be a nutes lock up. When you get the tds pen you will know about the water. My tape water is 200 but 200 what ? I would switch to RO or distilled. May be Zandor will help you. If you go distilled sears sells 2 kinds I have the small one and I can keep up. Oh 3 gallons a day you might need 2.