1. The oil film will disappear naturally after the nitrification system is established. This method is stable and reliable, but takes a long time.
2. There is an oil film remover on the market, which can absorb the oil layer on the water surface by itself and decompose it to remove it.
3. Keep some dragon beard lamps, black Mary, black teapot, etc. In the fish tank. They like to look for food on the water, and they will eat the oil film.
4. Use disposable cups to collect the oil layer slowly and then pour it out together. However, this method is time-consuming and easy to miss the oil layer, which is suitable for people with time and delicate mind.
5. Reducing the times of feeding fish food and increasing the times of changing water can reduce the generation of oil layers. Feed the fish twice a week, change the water frequently, and control the amount when feeding the fish, so as not to make the fish hungry.
Extended data:
When cleaning up the oil stains on the water surface of fish tanks, knowing the causes of oil stains can better prevent and avoid oil stains:
1, as far as fish food is concerned, the main content of fish food is protein, because fish has high requirements for protein. At present, most feeds for feeding fish contain 40-50% protein.
Protein is easily digested by fish, but not easily digested by fish. If there is too much indigestible protein in the feed, a large amount of protein or semi-decomposed protein contained in fish excrement is insoluble in water, forming oil stains on the water surface of the fish tank.
2. Tap water contains a small amount of impurities and organic matter. After being placed in the water tank for a period of time, some engine oil will dissolve in the water and then surface.
3. If the filtering equipment is not cleaned in time, impurities will be deposited for a long time to produce oil pollution.
There are "fatty substances" in the tissues of aquatic plants and algae. After the algae died and rotted, the oil dissolved in the water and then surfaced. When new water is injected, the oil stains attached to aquatic plants, tank walls, etc. will be washed out and then surfaced, resulting in the phenomenon of oil stains on the water surface.