Features and benefits of using Eheim Substratpro+ O2xygen biological filter medium: 

• High-quality material: ceramic filter mass made of silicates and tourmaline. 

• Innovative technology: Tourmaline produces electron-activated oxygen (super oxygen O2-) for efficient oxygen supply 

• High porosity of 45%: for an above-average settlement area of filter bacteria. 

• pH-neutral: Does not affect the water chemistry and ensures a stable, healthy aquarium climate. 

• Fast degradation of pollutants: Allows extremely fast biological degradation of impurities. 

• Promotion of metabolism: Activated oxygen strengthens fish, plants and the entire ecosystem. 

• Durable and robust: Burned by extreme heat (over 1.000°C), the mate-rial offers exceptional durability. 

• Can be used several times (rinse carefully for cleaning). 

• Suitable for fresh and sea water. 

SUBSTRATpro+ O2xygen needs to be placed in the filter after the mechanical media and can be built up in one or more layers. SUBSTRATpro+ O2xygen is washable and can be used several times.  

With the high number of filter bacteria, peak nitrite loads are more easily reduced, and the maintenance intervals of the filter material are longer.  

Top tip: 

• It is advisable that you clean the filter medias in old aquarium water during maintenance. Do NOT clean the filter medias in tap water as chlorine and chloramines will remove the beneficial nitrifying bacteria that have colonised during the maturation of the aquarium. 

• EHEIM filter medias are some of the best in the world. They are highly efficient, developed in their own research laboratories, and made from the best raw materials. They are continually checked and are guaranteed to be free from any harmful substances. 

For more detailed information, click here: SUBSTRATpro+O2xygen | Biological | Filter Media | Aquatics | EHEIM GmbH & Co. KG. Leading aquarium manufacturer.