水草情迷

剛買回家.....試用時
不明白說明
用來用去都是橙黃色

請大家教我用吧

Maybe your KH is really below 1? Try use 10ml instead of 5ml, it will give you accuracy of 0.5 Degree, I once had KH below 0.5 Degree. If you're using ADA Soil with VERY highligh, dose no CO3 supplement, and you don't do regular water change, its possible to have very low KH.