caliwildviolet
Active Member
I have one tray that is in a new area and the grow tray has a white powder on it and it is also on the base of the plant. Never had this prob before. I have one tray with an aquarium thermometer heating the solution because it is outside of normal grow area. It has a white crystalline deposit all over it. NO mites...I know those well. ph is good, plants look good with slight leaf tip curl on a couple and are four weeks old...any ideas? Looks almost like calcium deposits....