Boiled water with indian almond leaves for betta

[Aniket]

Is there anyone having experience with boiled indian almond water used for betta?
One of my friend told me to use boiled water with almond leaves. But good bacteria will also die after boiling water.
Is it good for fish to use such water?

 

[Fishmanic]

I believe it is good for betta as they naturally come from soft water with tannins. Boiling the leaves before adding the water to the tank will release more tannins. Bettas prefer a blackwater tank. You probably should add water conditioner to water to remove chlorine. And let the water cool to near aquarium temperature before adding tannin darkened water to the tank. For a 10 gallon tank maybe add 5 ounces of extracted tannins made from boiling a leaf in 1quart of water and save the rest for using after your next water change.

 

[Colin_T]

It's fine to boil the leaves and use the water. Just let the water stand for at least 24 hours after boiling.
If you have chloramine in the water supply, then dechlorinate it before adding it to the tank.
If you have chlorine in the water supply, most of it will come out when the water is boiled, and the remaining chlorine will come out over the next 24 hours.

Most bacteria and life forms on this planet die at 60C so boiling water will kill bacteria in the water. However, once the water has cooled down, it will not harm the bacteria in the tank.

Tannins (brown staining from plants in water) do help to reduce bacteria, viruses, fungus and some other disease organisms in water, however, they don't disinfect the tank or cause any problems to the filter bacteria.