Filter & Reactor Media
Which BRS Media Is Right For You?
| Media Type | Best For | How To Use | Benefits | Maintenance |
|---|---|---|---|---|
| ROX 0.8 Carbon | Ultra-clear water, high-end reef tanks, maximizing efficiency with minimal media |
Media Reactor Media Bag |
✔ Very high adsorption capacity ✔ Low dust and low phosphate ✔ Polishes water quickly ✔ Requires less media |
Replace every 2–4 weeks or when water clarity drops or odor returns |
| Bituminous Carbon | Larger systems, routine maintenance, hobbyists looking for value |
Media Reactor Media Bag |
✔ Budget-friendly option ✔ Reliable organic removal ✔ Easy to use in bags or reactors ✔ Good all-around performance |
Replace every 3–4 weeks or when water begins to yellow |
| Standard GFO | General phosphate control, mixed reefs, moderate nutrient systems |
Media Reactor Media Bag |
✔ Effectively removes phosphate ✔ Helps reduce algae growth ✔ Consistent performance ✔ Easy to control in reactors |
Replace every 4–6 weeks or when phosphate levels begin to rise |
| High Capacity GFO | High nutrient tanks, heavy feeding, reducing maintenance frequency | Media Reactor |
✔ Higher phosphate binding capacity ✔ Longer lifespan ✔ Less media required ✔ Fewer media changes |
Replace every 6–8 weeks or when phosphate creeps up |
| Biopellets | Heavily stocked tanks, high feeding systems, hands-off nutrient control | Biopellet Reactor |
✔ Supports beneficial bacteria ✔ Reduces nitrate and phosphate ✔ Continuous nutrient export ✔ Less manual dosing |
Top off every 4–8 weeks as pellets dissolve; replace fully every 6–12 months |
| CO2 Absorbent Media | Homes with high indoor CO2, low pH systems, improving coral growth conditions | CO2 Scrubber Reactor |
✔ Helps raise and stabilize pH ✔ Simple to implement ✔ Works with skimmer intake ✔ Immediate impact in many systems |
Replace when media changes color or pH begins to drop again |
BRS Filter Media FAQ
What filter media does BRS offer for reef aquariums?
Bulk Reef Supply carries several of the most commonly used types of filter reactor media for saltwater aquariums, including GFO for phosphate reduction, activated carbon for water clarity and odor control, biopellets for nutrient management, and CO2 absorbent media for pH support. These options make it easy to target specific water quality issues.
What does GFO do in a reef tank?
GFO removes phosphate from the water, helping reduce algae growth and support coral health. BRS offers standard and High Capacity GFO so you can match performance to your tank’s nutrient load.
When should I use activated carbon?
Activated carbon is used to improve water clarity, remove odors, and eliminate dissolved organics. It is ideal for polishing the water and maintaining a clean, clear display.
What are biopellets used for?
Biopellets support beneficial bacteria that consume nitrate and phosphate. They are typically used in reactors to provide consistent nutrient reduction with minimal manual dosing.
What is CO2 absorbent media used for?
CO2 absorbent media helps reduce carbon dioxide entering the tank, typically through a skimmer air line. This can improve and stabilize pH, especially in homes with elevated indoor CO2 levels.
Reactor or media bag. Which is better?
Reactors provide better flow and efficiency, especially for GFO, carbon, and biopellets. Media bags are simpler and budget-friendly, but reactors offer more consistent performance and control.
Why choose BRS filter media?
BRS filter media focuses on proven performance and core reef filtration needs. With options for phosphate control, water clarity, nutrient export, and pH stability, it is a reliable starting point for building an effective filtration strategy.
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