Let's talk about harmful yellow water first.
First, if the fish tank is not cleaned for a long time, such as rotten leaves, residual bait, fish manure, aging filter materials and so on. The water quality is turbid, deteriorated and yellow. In this case, it is even more dangerous. If it is found in time, it must be handled in time, because most fish friends may have given oxygen to the fish tank, so the fish may be fine for the time being, that is, after a long time, the water quality is getting worse and worse, and a large number of fish will die if ammonia nitrogen exceeds the standard.
Solution: In this case, water must be changed. You don't have to think of other good methods, and it is impossible to achieve the effect. Be sure to change 1 every time, or more now, for about three days, and then strengthen physical filtration, add some coconut charcoal to assist physical filtration, and you can handle it.
Second, the yellow water poisoned by yellow powder and oxytetracycline will cause the fish tank to turn yellow. In this case, yellow water alone is harmless to fish, but if there are nitrifying bacteria and aquatic plants, it must be treated. So in general, the yellow water caused by this medicine is best treated in time. Of course, it may also cause other colors of water, which also needs to be treated in time. Otherwise,
Solution: In this case, water must be changed, and it cannot be changed at one time, because the effect of fish treatment once will be greatly reduced, and it can be changed in batches. There is no better way, only changing water is the most fundamental solution. Because this is medicine, we must change the water.
Besides, harmless yellow water:
The first is the yellow water of algae, mainly brown algae. It is most likely to be encountered at the beginning of can opening. The visual yellow water caused by brown algae is not real yellow water. On the contrary, the water quality is very good in this case, which only affects the appearance. Because yellowing on landscape stone or glass is not beautiful, most people have to deal with it.
Solution: In this case, there is no need to change the water. Tool fish, shrimp and snail can be completely removed by biological treatment. If you want to be quick, you can also increase labor and scrape off what you can. This is still very simple to handle, and everything is fine.
Second, the yellow water caused by sinking wood is not harmful to fish, shrimp, snails and the whole system, but only beneficial to aquatic plants and the whole system. The yellow water from the dead wood is a magic weapon, which has a good ability to stimulate the growth and development of grass and fish, and so does nitrifying bacteria. It can effectively inhibit the growth of harmful bacteria, has the function of disinfection and sterilization, and is very useful for the prevention and treatment of fish diseases. The only disadvantage of this yellow water is that some people may not like this color. Of course, many people like this yellow color and will deliberately create this color, especially South American tanks.
Treatment method: it can be absorbed by protein cotton and put into the filter outlet, which basically has a good effect in 24 hours. Protein cotton is also recognized as the fastest and most effective method to remove yellow water, but for tanks with shrimp, it can not be used for a long time because of its rapid acid reduction. Please pay attention. In slight cases, activated carbon can be used for adsorption, and then the concentration of yellow water can be reduced by slowly changing water for a long time to achieve the clarification effect.
Third, there is little difference between the yellow water and the yellow water, but the yellow water is accompanied by long-term and stable water quality maintenance ability. Perhaps the leaves of plums will be weaker, which is harmless to the whole system and can be used safely.
Treatment method: this method is the same as sinking wood, mainly absorbed by protein cotton or activated carbon, and supplemented by changing water.