Thanks! I will buy the test kits with the new plants then. I hope my strips were off. One thing isn't right about the hardness though. I tried looking up plants that like hard water and it seems I had few of them. Except for cryptocoryne all died or are just barely surviving. 1 tiny java fern, hydrocotyle and jungle val are the survivors. 2 types of hygrophila, java moss, ludwigia repens died. And perhaps more. So perhaps my test strips are incorrect about the hardness? Well, I will see once I get the liquid test kits.