recycling

I just wanted to share this video I found online. They sell you fish in a reusable glass jar that get sterilized after each use. This just blows my mind. Not to mention the fish collection. I've also seen other store tours, these guys are way ahead of the rest of the world.

Has anyone ever recycled the salt when doing a water change? I've been thinking on how much does salt cost every time we do a water change, so I've been thinking there must be a way recycled assault I mean the water is the only thing that evaporates so if we could find a way to get the unwanted...