Red Sea


  • SKU: 730773374021
  • Availability: In Stock In Stock OUT OF STOCK In Stock
Product Name Qty
Size: 100 g

SKU: 730773374021

Availability: 13 In Stock

Size: 250 g

SKU: 730773374052

Availability: 5 In Stock

Size: 500 g

SKU: 730773374106

Availability: 7 In Stock

Size: 1000 g

SKU: 730773374205

Availability: 13 In Stock


    Red Sea REEF-SPEC Carbon is the ultimate choice for marine & reef aquariums due to its unique technical characteristics.

    REEF-SPEC Carbon’s granule size and its micro/macro porous structure, ensures a very high total adsorption capacity and rapid extraction of the specific organic pollutants that are found in Reef aquariums. This helps to make the water crystal clear and removes odors.

    REEF-SPEC Carbon has extremely low phosphate leaching and minimal ash content while also not affecting the pH of aquarium water.


    • Rapid removal of organic pollutants
    • Crystal clear water & odor removal
    • High total adsorption capacity
    • Ultra-Low phosphate output
    • Ultra-Low ash content
    • Suitable for Marine & Freshwater
    • Filter Bag included

    Why Use Carbon?

    There are organic pollutants that can only be removed from reef aquarium water by active Carbon. The reef aquarium is a closed artificial ecosystem where living creatures continually produce organic waste consisting of proteins, fats, carbohydrates, organic acids and phenols.

    If allowed to decompose the organics will fuel the activity of many unwanted microorganisms in the aquarium, increasing the total oxygen demand (BOD, COD) which will cause a reduction in Redox potential, as well as causing excessive production of CO2 by bacterial respiration, which will reduce pH.

    Furthermore, there will be an increase in nitrogenous and phosphorus compounds, encouraging growth of nuisance bacteria and eventually of nuisance algae. The accumulating organics also has a significant effect on light penetration, especially in the blue and near UV spectrum that stimulates coral growth.

    Stripping out the organics from the water is therefore crucial for the success of the aquarium. Using strong protein skimming, fine mechanical filtration and healthy biological filtration (nitrification and de-nitrification) will treat the large organic particles and the end products of the organic decomposition processes. However, there are many small organic particles that can only be treated by very fine mechanical micro-filtration using activated Carbon.

    Usage Tips

    The adsorption activity of the Carbon media relies on a good Carbon/water contact, and therefore moderately active water flow will increase the efficiency.

    Strong water flow will reduce the contact time and interfere with the adhesion process of the organic molecules to the Carbon.

    Strong water flow may also cause the granules to grind against each other, releasing Carbon material to water.

    For Best Results:

    • Remove any fines, by rinsing Carbon under tap water.
    • Replace Carbon every 1.5 - 2 months.

    REEF-SPEC Carbon Specifications

    • Shape - 0.6 - 2.3 mm flakes
    • Density - 0.48 g/ml
    • Pore Volume (PV) - 1.04 ml/g
    • Total Surface Area (TSA) - 1000 m2/g
    • TSA/PV - 990 m2/ml
    • Small Organic Adsorption - 1000mg/g
    • Large Organic Adsorption - 280 mg/g
    • pH in Distilled Water - >8
    • Phosphate Output - 0.000001 g/ml