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https://www.senzeal.com/aquarium-uv-sterilizer-7w-11w-p0829.html
https://www.senzeal.com/c/aquariums-amp-fish-bowls-0478
https://www.senzeal.com/c/aquarium-plant-care-0490

Fishkeeping can cultivate temperament and beautify the environment. However, in order to keep fish well, you need to pay attention to every detail of life, so that the fish can live a healthier life. So what are the tips and precautions for fish keeping in the ultraviolet sterilizer aquarium? In the newly set up aquarium, you must take care of the water for at least 5 days before considering putting the fish in it. The water added to the aquarium fish keeping is preferably tap water that has been stored for more than 3 days, and the temperature of the water is generally controlled above 20 degrees Celsius. The normal water level of the aquarium is best kept on the decorative surface on the top of the tank.
In order to ensure that the water quality of the aquarium is good and the fish and plants can grow healthily, I hope fish owners can follow the precautions below.
Maintenance of newly setup aquariums
To keep fish well, water is the key! The newly-setup fish tank contains many substances that are toxic to the fish with the tap water. The fish tank must be continuously circulated for water, pump oxygen, and light in a timely manner 24 hours a week. Light can effectively remove toxic substances in water, such as chlorine in tap water and virus bacteria). Do not stop at will without special circumstances.
Purchasing and adding fish
1. After the newly setup aquarium has been running for one week (minimum water care time is more than 5 days), the water has been basically dealt with. At this time, you can consider adding fish. When buying fish, you must go to a professional aquarium online store like Senzeal. Buy fish that are free of germs, grow healthy, swim naturally, and are active. (Do not buy fish on a stall or in a place where the water quality is obviously dirty. This fish may be infected with bacteria.)
2. After the fish is bought home (tropical ornamental fish should be carried home in time when the temperature is low, so as not to affect their survival due to the large temperature difference), do not hurry to put the fish in the fish tank, and rinse the outside of the bag containing the fish with water. Put the fish and the bag together in the water of your own fish tank for 15 ~ 30 minutes (this is for the fish to gradually adapt to the water temperature. Sudden temperature rise or temperature drop more than 5 degrees Celsius will make the fish catch a cold and get sick). Then pick them up one by one with your hands and place them gently in the tank. Do not pour the water you brought home with the fish into the tank.
Fish breeding, feeding, and care
1. The fish breeding density is a very professional issue, and it is related to the volume of the aquarium, the size of the water surface, the type of fish, and the polyculture of the fish.
2. The newly purchased fish must wait for 48 to 72 hours before feeding. Because fish are frightened during stocking, and they need an adaptation process for new water bodies and new environments. This can improve the survival rate of fish. The amount of the first meal must be small and gradually increased afterward.
3. It is best to quantify the feeding amount each time. The feeding time is preferably 2 hours after the light is turned on or 3 hours before the light is turned off (the fish will get enteritis if they do not fully wake up and do not fully digest the food before getting into sleep). The most scientific way to feed tropical ornamental fish is once every two days (it can also be done once a day, and you must not feed it multiple times). It is advisable to let fish eat less, not more. Too much feeding causes the fish to eat too much and can get enteritis and swell.
Fish food that can't be eaten should be removed in time. Fish don't like to eat leftover food! Sedimentation can affect water quality and subsequent fish diseases. Fish food should be purchased from regular manufacturers. Do not throw other food in order to avoid fish poisoning or bringing bacteria.
4. Pay attention to the dynamics of the fish every day when you feed the fish and watch the fish normally. If you find any abnormalities, you should deal with them in time.
The care and maintenance of aquatic plants
Aquatic plants are not only landscaping and ornamental in the small aquarium. Its roots also bear the burden of decomposing and absorbing organic waste. Its leaves can release oxygen in the water, and can also absorb 30% of fertilizers, so taking care of aquarium plants are also an important part of the ecological aquarium (placing plastic water plants in the box will produce harmful chemical elements such as polyethylene, which will damage water quality). In addition to absorbing organic matter in the fish tank, it also needs the fertilizer on which it grows. This liquid fertilizer can well meet the various indicators required by aquatic plants. The aged leaves should be trimmed and clipped out in time to avoid contaminating the water quality.

You might also want to read more:
Things to Know Before Decorating Your Fish Tank
Freshwater Angelfish
Saltwater Aquarium