Are pond pumps the best thing to get rid of our scum?

While a pond pump can help improve water quality and reduce the amount of floating debris, it may not completely eliminate scum effectively. To reduce scum formation and ensure a healthy pond environment, consider implementing a combination of biological, mechanical, and chemical control methods:

Biological Control:

1. Healthy Plants: Increase the number of aquatic plants in the pond. Plants help absorb nutrients, reduce sunlight penetration, and create a natural ecosystem that limits algae growth.

2. Beneficial Bacteria: Use beneficial bacteria cultures that break down organic matter and compete with harmful bacteria.

Mechanical Control:

1. Surface Skimmers: Use a surface skimmer to remove floating debris, including scum, before it sinks and decomposes.

2. Nets: Manually remove scum with a pond net as needed.

Chemical Control:

1. Algaecides: Apply algaecides specifically designed for ponds. Follow the product instructions carefully to prevent harming other aquatic life.

Preventive Measures:

1. Minimize Nutrient Input: Reduce the amount of nutrients entering the pond, such as runoff from fertilized lawns or excessive fish food.

2. Control Overfeeding: Feed fish only the amount they can consume within a few minutes to avoid excess food decomposing in the pond.

3. Partial Water Changes: Regularly perform partial water changes to remove accumulated dirt and debris.

4. Maintenance: Keep the pond free of debris, such as fallen leaves, to reduce the likelihood of scum formation.

Remember that the most effective approach to managing scum involves a combination of different methods tailored to your specific pond conditions. If the scum persists or the pond water quality remains poor, it's advisable to consult with a pond expert for professional guidance.