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It is not as efficient as the biofilm found on sand in the ocean which have been naturally selected through millions of years of evolution
it allows your filtration system to operate more efficiently
Operates efficiently in aquariums up to 52cm deep
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EHEIM Substrat Pro 2L Biological Aquarium Filter Media 60gal It is not as efficientEHEIM Substrat Pro is crafted to boost aquarium water quality efficiently in both freshwater and marine settings. Constructed from sintered glass, the filter media features a highly porous structure, facilitating optimal growth for beneficial bacteria crucial for biological filtration. With an extensive surface area of 450 m per litre, it provides an excellent environment for nitrifying bacteria, effectively aiding in the breakdown of ammonia and