dehumidifier water vs RO water

[Dragonseek]

Hello guys!
is dehumidifier water same as RO water ? in terms of quality of water for arowana health?
as I know Ro water better than tap water, because tap water may contain certain level of metal in it. the worse case is hard water.
however, does RO system eleminate the bacteria for fish? for sure dehumidifier water does not has bacteria in it. That's maybe the main difference between RO & dehumidifier water.
Thank you!

 

[Spiritofthesoul]

not sure about dehumidifer water. But you are not suppose to just use RO water for your tank.
Its too pure. Not only does it lose heavy metals, so does the minerals.
you can either mix RO with tap water, or add commercial minerals like Seachem Equlibrium

 

[candle1212]

do what the discus poelpe do save the waste ro water and add it back to the tank its also been filltered thro the carbon .i use aquatronica to measure and top up the condutivity level. i this i have done it for years.