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- The water temperature should be at 26 - 30 degrees and needs to be maintained all the time
- Fluctuations can harm or kill the fish
- A lower temperature may result in the fish can being disease prone
- A higher temperature may help to keep diseases away
- Too high a temperature can cause the softer tissues round the head to wrinkle faster
- An aquarium heater may be required to keep the temperature from falling too low in cold weather. It also helps
in the increase of the fish metabolic rate thereby promoting frequent feeding and rapid growth.
- Keep pH (or hardness level) between 6.0 to 7.0. Arowana thrives in soft water. Water change must be
monitored. A sudden change of pH level could be detrimental to Arowana as well as other fish. Use a pH test kit to
test the reading.
Adding black water extract or peat lowers the pH level slightly and this can enhance its colour.
- Arowanas are very sensitive to foreign substances such as chlorine
- When changing water, it is good to add anti-chlorine and metal-substances removers as to treat new tap water.
- Other harmful or toxic substances are the by-products from the waste and urine of the Arowana. These
by-products are nitrate and ammonia. This causes common problems such as gill-turning, loss of appetite, cloudy eye,
and fin rot. A filter is recommended to balance the nitrogen cycle. However, do not rely solely on the filtering
process. Changing the water constantly is the most effective way to keep the water at a safe level.
- Proper aeration is necessary to provide sufficient dissolved oxygen content in the water for Arowana.
- Water needs to be changed weekly or twice per week at 30 to 50% each time. This also depends on the fish size,
the number of fish in the same tank, and the volume of water or capacity of the tank. Water needs to be changed more
frequently where there are many fish in the tank or where the tank is small or where the fish is large.
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