Filter Media
ATB BioPellets 500ml
$19.99
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Product details
Product details
ATB BioPellets 500ml are biologically degradable polymer pellets designed to be used in a media reactor for running aerobic bacterial growth. As bacteria colonize the pellets, they break down the material and consume dissolved nutrients, which can help reduce nitrate and phosphate over time. This makes them a practical option for aquariums that are managing nutrient levels, particularly where consistent filtration flow through a reactor is available.
Features:
- Designed for use with a media reactor to ensure the pellets tumble gently with strong water movement
- Supports aerobic bacterial activity on the pellet media to help consume nitrate and phosphate
- Nitrate and phosphate levels are expected to begin decreasing after about 2–4 weeks of use
- Pellets are consumed by bacteria, so periodic top-ups with new pellets are needed to compensate for digested media (typically every 3–6 months)
- Placement guidance: positioning the reactor outlet in front of a protein skimmer pump is suggested to limit bacteria entering the display
- Requires sufficient water movement to help prevent low oxygen and pH issues, especially during the night
- Aquariums with higher starting phosphate or nitrate may experience a short period of temporary water cloudiness
Specifications:
- Product name: ATB BioPellets 500ml
- Category: Filter Media
- Recommended dosing (base rate): Use 500 ml per 100 gallons of total water volume (calculate total water volume without live rock and sand)
- Adjustments for heavier feeding: Higher dosages may be appropriate for larger or heavy feeding aquariums
- Expected timeframe for results: About 2–4 weeks for nitrate and phosphate reductions to start
- Pellet replacement interval: Add new pellets every 3–6 months to compensate for digested pellets




