Just a quick intro first. I have been away from Saltwater/Reef tanks for a few years, but coming back. I currently have nothing so once again I will be starting from scratch. I am planning on starting a 20g nano in the coming months. One Local store has a great price on the Innovative Marine 20...
I use to use salt mix and R.O. water to make my saltwater, but lately I have been getting natural seawater from the LFS for 50 cents a gallon.
What are your thoughts on Natural Seawater Vs. Saltmix & R.O. water?
What do you guys use??