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[2] [6] Many of the larger ones can be backflushed in such a way that the discs are able to separate and spin during the cleaning cycle. [1] [3] [6] In some cases, a booster pump may be required for backflushing. [4] Disc filters can be used for many types of contaminants, including fine sand and organic matter.
The water trickles through the trays, keeping the filter wool wet but not completely submerged, allowing aerobic bacteria to grow and aiding biological filtration. The water returns to the aquarium like rain. [14] Alternatively, the wet/dry filter may be placed below the tank. In this design, water is fed by gravity to the filter below the ...
For freshwater aquaria, gravel is the most common substrate. To prevent damage to fish, gravel should not be sharp. Aquarium gravel can be as coarse as pea-sized or as fine as 1–2 mm. [1] It is available in a number of colors, and may be naturally colored or dyed, and may have a polymer seal to ensure it does not affect water chemistry. [1]
Symphysodon (colloquially known as discus or discus fish) is a genus of cichlids native to the Amazon river basin in Brazil.Due to their distinctive shape, calm behavior, many bright colors and patterns, and dedicated parenting techniques, discus are popular as freshwater aquarium fish, and their aquaculture in several countries in Asia (notably Thailand) [1] is a major industry.
Backwashing cycle is run on the left filter of the test columns in a water filtration plant. [1]In terms of water treatment, including water purification and sewage treatment, backwashing refers to pumping water backwards through the filters media, sometimes including intermittent use of compressed air during the process.
The resulting mixture is used to clean organic residues off substrates, for example silicon wafers. [1] Because the mixture is a strong oxidizing agent , it will decompose most organic matter , and it will also hydroxylate most surfaces (by adding –OH groups), making them highly hydrophilic (water-compatible).
Water engineering is an important discipline that aims to provide clean water and water safety, and it can be applied to every stage of the water cycle. Water engineering can be divided into further sub-sets: structural water engineering, water treatment and sewage treatment. Structural water engineering involves building, repairing and ...
In the wild, Ancistrus species prefer flowing water, so tanks with flow are typically used when keeping them in captivity. Since they are bottom-dwelling fish, substrate is considered preferable to a bare tank floor. Mixtures of gravel, dirt, and clay are frequently used as substrate for Ancistrus.
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