Algae Killer 50ml
Algae Killer controls most algae and green water in aquariums and ornamental ponds. Effective against growing algae and helps prevent its return.
Active ingredient: Diuron
Best used when algae first appears. For optimal results, control light exposure—both natural sunlight and artificial light—to reduce algae growth.
Usage Instructions
- Shake well before use
- Add 15 drops per 18L of aquarium water
| Application | Amount |
|---|---|
| For freshwater aquariums | 15 drops per 18L |
| For ornamental ponds | 15 drops per 18L |
FAQ
Can Algae Killer be used in saltwater aquariums?
Please contact customer service
How often should I use Algae Killer?
Use when algae first appears. Do not overuse, as it may disrupt the aquarium’s balance.
Is Diuron safe for fish?
Diuron is safe for use in freshwater aquariums when applied as directed. Always follow the recommended dosage.

Megan James –
Used it when my tank started showing green water. Added 15 drops per 18L as instructed. The algae disappeared within a few days. I’ve kept the light exposure low since then and haven’t seen any return. Works well for early algae outbreaks.
Keith Jackson –
It helped reduce the green water in my freshwater tank. The algae didn’t come back immediately after treatment. I still monitor light hours to prevent recurrence. Slightly stronger smell than expected, but not a problem.
Lisa Wright –
Great product for quick algae control. Followed the instructions exactly and saw visible improvement within 24 hours. No fish harm reported. Will use again if algae appears.