Bio-Load Calculator

Calculate the biological load percentage of your tank based on fish count and sizes.

Results

Visualization

How It Works

Bio-load measures the total waste produced relative to your tank and filter capacity. Heavy bio-load means ammonia and nitrate accumulate faster, requiring more frequent water changes. Live plants absorb nitrate and effectively increase capacity. High-waste fish like goldfish produce 3-4x more waste per inch than small tetras.