New seawater is going to be mixed many times in the future. Why not take a little extra trouble in the initial mix and save a lot of time later?
When purchasing the sea salt, obtain salt that is specifically designed for use with R/O water, as this should be used rather than tap water.
The net gallonage of the aquarium is known. Having purchased the dry sea salt, it is fairly easy to guess the amount that is needed to meet the intended SG of the [tag-tec]aquarium seawater[/tag-tec], by looking at the suggestions of the manufacturer. Measure out a little less than it appears may be needed. Once the salt has been measured out, weigh it and take a note. It is recommended that grams are used when weighing the salt. [Read more]