Home Forums Fish How is the oil film formed in the aquarium?


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    The oil film is mainly a layer of oil floating in the aquarium. After many farmers have cleaned the oil film, the oil film will appear again after a while. It is puzzling. If you want to know how the oil film is formed, you must first understand what the oil film is. It is mainly the protein in the water. If the quantity becomes larger, it will form what we call an oil film.

    Oil film is mainly produced from fish feed. Everyone knows that protein is necessary for fish to survive. Therefore, the fish feed we use contains 40%-50% protein. Some of these proteins are easily absorbed by fish. Yes, some are not easily absorbed by fish. The protein that is not easily absorbed will be excreted into the fish tank with the feces of the fish. The protein is insoluble in water, so those proteins that are not decomposed or semi-decomposed will condense and float on the water surface. on. These proteins floating on the water surface cannot be removed by the filtration system of the aquarium. When the amount of protein is small, it is only scattered on the water surface, but when the amount is large, it will form a large area of ​​”oil film” floating, which seriously affects the viewing of tropical fish. . In addition, there is another situation that can produce “oil film”, that is, the “hydrophobic layer” formed by the macromolecular organic matter in the water is not completely decomposed or dead bacteria, and external dust, but this is the case in an aquarium with fish. Rarely, such oil will show multicolored colors in the sun when floating on water.

    Causes of Oil Film formation

    1. Tap water contains a small amount of organic matter with impurities. After a period of time in the water tank, the organic grease will dissolve in the water and surface.

    2. Eight of the algae tissues become “oil lipids”. After the algae die and rot, the oil is dissolved in the water and then surfaced. When new water is injected, the grease attached to the water plants, tank walls, etc. will be flushed out, and then surfaced to the surface of the water, resulting in an oil film on the water surface.

    3. The surface of aquatic plants is waxy. When the aquatic plants age and decay, the waxy substance on the leaf surface will dissolve in the water and then surface.

    4. Grease produced by microbial remains or old waste, bait, organic matter, etc. The oil film is most severe when there is no flow on the water surface.

    5. The filter material in the filter is too dirty, thus overflowing grease.

    The effect of Oil film on ornamental fish

    1. Obstruct the escape of exhaust gas or water temperature in the water, so that the water quality deteriorates early.

    2. Block the light source from entering the water and affect the photosynthesis of aquatic plants.

    Method of removing Oil film:

    1. Moonlight fish, black mary, and guppy will eat the oil film on the water.

    2. Degreasing film device, water fairy, waterfall with oil filter film, and filtering rain pipe are placed on the water surface, and in principle, the back filter cylinder should also be able to remove the oil film.

    3. Use the oil film processor to make the oil film enter the filter, and use the filter cotton in the filter material to decompose the grease by the nitrifying bacteria.

    4. Use a cup to slowly collect the oil film in the cup and discard it.

    5. Use oil-absorbing paper to absorb, and put oil-absorbing paper on the opposite corner of the water outlet (oil film accumulation area) to absorb the oil film.

    6. Install a horn mixer to suck the oil film into the mixer, pour it into the water and mix with the water, and then absorb and decompose by the filter cotton in the filter.

    7. Remove dirt in the filter.

    8. Breeding fish that use oil as food (fish that float on the surface of the water and eat dirt on the water surface), such as black girls or black teapots, can reduce the production of oil film.

    The protein in the water mainly comes from high-protein fish food. If a large amount of high-protein fish food is fed to ornamental fish, these residues will form an oil film when entering the water. The oil film is not very harmful to ornamental fish, so don’t worry too much.

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