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The substrate should be chemically inert and free of sharp edges. Fine gravel (1–2 mm) is preferred by some aquarists because coarser substrates allow debris to settle within the gaps between grains, which is particularly difficult to clean in a planted aquarium. Sloping the substrate so it is most shallow in front accommodates larger plants ...
It desires sandy substrates, inhabiting seagrass meadows in the wild, and will grow wider blades in turbulent water and taller, thinner blades in calmer environments. Out of all the Caulerpa species that are commercially available, this one is the most popular and widespread, commonly used to cover sand beds in marine planted aquariums. [54] [55]
Plants are often trimmed to obtain the desired shape, and they can be positioned by tying them in place inconspicuously with thread. [38] [39] Most serious aquascapers use aquarium-safe fertilizers, commonly in liquid or tablet form, to help the plants fill out more rapidly. [40] Some aquarium substrates containing laterite also provide ...
Aquatic plants are used to give the freshwater aquarium a natural appearance, oxygenate the water, absorb ammonia, and provide habitat for fish, especially fry (babies) and for invertebrates. Some aquarium fish and invertebrates also eat live plants. Hobbyists use aquatic plants for aquascaping, of several aesthetic styles.
Krill feeding in a high phytoplankton concentration (slowed by a factor of 12). Filter feeders are aquatic animals that acquire nutrients by feeding on organic matters, food particles or smaller organisms (bacteria, microalgae and zooplanktons) suspended in water, typically by having the water pass over or through a specialized filtering organ that sieves out and/or traps solids.
Beneficial bacteria colonize the gravel bed and provide biological filtration, using the substrate of the aquarium itself as a biological filter. [9] [14] Undergravel filters can be detrimental to the health of aquatic plants. [9] Fine substrates such as sand or peat may clog an undergravel filter. [14]