How to provide water for the arowana?

Level or how the new aquarium water Filling:

Method I:

Soak the new aquarium with water and salt fish (a genggam/20 grams per 100 lt of water) for one night
Remove the sediment water and repeat it again today
Fill the aquarium water and give Aeration (bubble water / oxigen water pump)
Add salt fish (one handful per 200 lt of water)
Aquarium had used to enter a new fish
Method II:

Soak the aquarium with water and active carbon (1 kg of carbon aktif/100 ltr water)for one night
(activated carbon included in the container or bag packaging / gauze)
Remove water sediments today
Dry the aquarium
Fill the aquarium water and give oxigen (water bubble)
Add salt fish (one handful per 200 lt of water)
Aquarium had used to enter a new fish
tips:

Active carbon was used for immersion I do not cast
Activated carbon can be used as a filter media in aquarium
The course of treatment for sick fish should be removed from the active carbon filtermedia
Do not use table salt / beryodium for immersion
The new aquarium filled with fish do not DIRECTLY before the first immersionprocess