Clearing Green Water in a Fishless Pond

Green water = algae feeding on nitrate from ammonia breakdown. Without fish/plants, you lack biological balance.

Options:

• UV clarifier (effective but costly).
• Pool algaecides or copper-based treatments (safe without fish).
• Dense filter mats to trap particulates.

Sunlight drives algae; UV clarifiers mimic UV-C, not sunlight UV. Shade helps, but treatment is simpler for small features.