What are the best methods for preventing algae on concrete outdoor chairs near ponds?

Algae growth on concrete outdoor chairs near ponds is a common issue due to moisture and shade. To prevent algae, start by regularly cleaning the chairs with a mixture of water and white vinegar or a mild bleach solution (1 part bleach to 10 parts water). Scrub the surface with a stiff brush to remove existing algae. For long-term prevention, apply a sealant designed for concrete to create a protective barrier. Additionally, ensure proper drainage around the chairs and position them in sunny areas when possible, as sunlight inhibits algae growth. Natural remedies like sprinkling baking soda can also help deter algae. For stubborn cases, commercial algae removers are effective but always test on a small area first. Consistent maintenance is key to keeping your concrete chairs algae-free and durable.