Do you know that by generating a slow circulation of water around the aquarium bed via heating will create an optimum conditions for humus bacteria to convert nutrients into a form that freshwater plants can absorb? The important role that humus bacteria play is, with the assistance of the humus substances that are produced, to convert mineral nutrients from soils into such form that freshwater plants can absorb. Humus enriched grounds are perfect for many popular aquarium plants such as Cryptocorynes and Echinodorus. A warm aquarium bed will also help promote healthy root growth and is especially important for countries in cold climate.
Heating cables designed for freshwater planted aquarium, can be used to lay in loops on the aquarium bed before covering the cables with humus-rich mineral nutrient medium. These cables will generate very slight warmth and keep the plant roots warm with nutrients released from the low heat. Plants in warmer aquarium bed usually fares better than those without.
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