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Aquascaping Substrate
Substrate for aquascaping: the characteristics of these substrates condition the availability of micronutrients. A fine-textured soil, like clay, often contains more trace elements that plants can assimilate than a granular, sandy-type soil. The proportion of organic matter is also important; it should be neither too low (less than 2%) nor too high (more than 30%). Certain characteristics, such as temperature or pH, also determine the availability of micronutrients. However, despite the presence of a rich soil, deficiencies can still occur. Indeed, it happens that some minerals, although present in the soil, are poorly assimilated or not at all. This phenomenon is often related to the soil's pH. Refer to the fertilizer category for more information.
See the "Traditional" freshwater sands
