🌊 Dive into Nature's Best! Increases availability of essential nutrients for optimal plant growth. Creates a balanced ecosystem for your aquatic life. Proudly crafted in the USA for superior performance. Encourages fish spawning by simulating rainy season conditions. Mimics natural blackwater environments for thriving fish and plants. Enhances plant nutrients Simulates blackwater conditions 500 ml capacity Brightwell Aquatics Blackwater is a 500-ml liquid humic substance conditioner designed to replicate the natural conditions of blackwater rivers, enhancing the health and vitality of both fish and plants in your aquarium. It promotes spawning, boosts nutrient availability, and is proudly made in the USA.