Should I continue using algaecide in my pond during winter?

No, you should pause using algaecide in your pond once temperatures drop into the cold autumn months and winter sets in. Algaecides are less effective during pond dormancy when algae growth naturally slows. Applying chemicals in winter risks harming beneficial bacteria and aquatic life. Instead, focus on physical debris removal and oxygen management. Resume algaecide treatments in spring as water warms and algae growth resumes for effective control.