Help/advice needed

[ReEf BoSs]

When i reused sand, i put it in a 5 gallon pale and rinsed in the bath tube turning it over until it stopped looking like dirty water. It worked okay. If there is currently no life in the tank you cant go wrong by trying if you need to . New water and time and it will all work. Id just clean everything as much as possible firs that way you’re not fighting high nutrients forever