Filling up my setup with freshwater then adding salt. Can I put sand and dry rock in freshwater for a few days until I add salt? Ordered it online but want to start setting the rock work up today. I usually just add saltwater to a new build but with this much water volume I think it's easier this way. I was going to do my Rockwork add tap water, add stuff to remove chlorine and when my salt gets here add it and keep checking the salinity until I get to 1.026.