水草情迷

he doesn't eat, swim, always hiding.
the fin and body is having some kind of spot.
Can you tell me if I should use any medical? What medical I should use? What kind of sickness is this? Is it heavy?

似係水黴+少少爛肉, 普遍因為水質差受感染
隔日換1/3 ~1/2水, 吸底沙, 加盬
上野黃粉都好有效
病左幾耐? 你好遲先發現?

yes, i found out so late coz he always hide behind the grass. I am new hand, no experience.
he is dead already. I will take the lesson to watch the fish more carefully.

where can I buy 黃粉?