What is the name of the liquid form of copper sulfate?

• A. SeClear
• B. ClearSe
• C. AquaClear
• D. BlueSe

Answer: (A)

Copper sulfate used to control algae in water often comes in a liquid formulation sold under a brand name. The liquid form is marketed as SeClear, which is the product name you’ll see on labels and instructions when copper sulfate is provided as a ready-to-use liquid algaecide. This form is favored because it disperses quickly in water, delivering copper ions that help suppress algae growth soon after application.

Understanding this helps explain why SeClear fits the question: it’s the recognized liquid copper sulfate product among common aquatic pesticides, whereas the other names aren’t standard liquid formulations for copper sulfate in this context. Remember that, regardless of form, copper sulfate must be used carefully—follow the label, consider water chemistry and aquatic life sensitivity, and apply at recommended rates to avoid harming non-target organisms.