What is the gel like substance in your pond?

The gel-like substance in a pond is often algal blooms or biofilms, which are formed by the accumulation of algae and microorganisms. These substances can arise from nutrient runoff, particularly nitrogen and phosphorus, leading to excessive growth. While some algal blooms are harmless, others can produce toxins that are harmful to aquatic life and human health. It's essential to monitor and manage nutrient levels in ponds to prevent such issues.