Copy and paste
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Prime® is the complete and concentrated conditioner for both fresh and salt water. Prime® removes chlorine, chloramine and ammonia. Prime® converts ammonia into a safe, non-toxic form that is readily removed by the tank’s biofilter. Prime® may be used during tank cycling to alleviate ammonia/nitrite toxicity. Prime® detoxifies nitrite and nitrate, allowing the biofilter to more efficiently remove them. It will also detoxify any heavy metals found in the tap water at typical concentration levels. Prime® also promotes the production and regeneration of the natural slime coat.
Following your progress I would do a 100% W/C Just for the very 1st fill up, use a bucket of tap water 12L ofc use prime in it mix for 5 min, get that to temp, full 100% W/C arrange tank go get fish.
The only reason for the bucket method is the bacteria will immature and we don't wanna
**** em off. W/c after I would still use tap to tank and long as there 1-30% changes