My betta tank water: What are the ideal levels and how to fix them?

Thanks for reaching out about Snow. Chronic high alkalinity and hardness can expose to fish to high levels of minerals that could lead to abnormal mineralization/calcification of gills and other orders. Test your tap water and if also high, which is expected, than bottled water might be in order. Good luck.

Drop the water temperature to 80 F. Bettas do best between 78 F and 80 F. The higher temp likely did not cause her death, but warm water holds less oxygen than cooler water. She may have been ill or old. She does appear bloated in the image. It may have been dropsy or other infection. Monitor water chemistry using a liquid test kit. They are more accurate than the strips. Tou can also submit a water sample for testing. The local Petco may do this for free or for a small fee. Aim for 0 ppm ammonia and nitrites with nitrates at 20 ppm or less. Try to keep the pH as close to 7 as possible. Bettas can tolerate acidic water, but changes should be gradual to allow time for acclimation.

Ideally, you want to wait at least 4-6 weeks for the tank to properly cycle regardless of size. Bettas are quite hardy and adaptable, so as long as water chemistry and temperature are good then you can probably add him now since you have everything set up. When testing water chemistry, aim for an absence (0 ppm) of ammonia and nitrites with nitrates at 20ppm or less. Water temp should be between 78 F and 80 F. A small filter and submersible water heater should be used. You will still need to perform partial water changes to stabilize chemistry and/or to maintain water quality. Use only conditioned water that is temperature matched to prevent stress or shock.

Recheck water chemistry to confirm 0 ppm ammonia and nitrites with nitrates at 20 ppm or less. A pH of 7 is fine and they can adjust to more acidic water as long as the change is gradual. Temperature should range between 78 F and 80 F. Plain aquarium salt (NOT table salt or epsom salt) can be used as a general tonic to reduce stress, improve gill function, treat minor infection and aid in recovery. Dissolve 1 teaspoon of salt per gallon of water in a cup or two of tank water and gently pour it into the tank. Perform partial water changes every couple of days to maintain water quality. Treat only the volume of water being replaced. Treat with aquarium salt for no more than 14 days then reassess the condition. An antibiotic, such as kanamycin or erythromycin, can be found in the aquarium section of the local Petco if the salt treatment doesn't help. Follow label directions carefully and remove the carbon filter insert during treatment if indicated.

Cold water can affect activity in fish. Bettas are tropical fish and do best between 78 F and 80 F. Check the water chemistry also. You can use a home test kit, such as the API Master Kit, or submit a water sample for testing. The local Petco may do this for free or for a small fee. Aim for an absence (0 ppm) of ammonia and nitrites with nitrates at 20ppm or less. Perform a partial water change if necessary to stabilize chemistry and/or to improve water quality. Use only conditioned water that is temperature matched to prevent stress or shock. Diet can influence color, so it is possible this is partly to blame for the color change. There are diets that can be fed to enhance colors.

Bettas are tropical fish and do best in water between 78 F and 80 F. A heater is typically required to maintain stable temperature. Rapid fluctuations in temp can be stressful. You should also check the water quality and chemistry. Poor water quality can cause the symptoms described. Filtration and regular partial water changes are necessary to keep a tank clean.

Yes, this is fine for a Betta tank. You should still use a small filter as well as a small submersible heater to maintain water temp. Bettas do best between 78 F and 80 F. If you choose to use tap water, use an appropriate water condition to remove harmful chemicals and heavy metals.