I been doing the freshwater thing since I was 11 an I’m 29. While I was at the LFS I was told they was selling off all there saltwater equipment cause it’s not making anymore money. Well I picked up a tank cause the price couldnt be pasted up, “$100 for 20L, tidal 55, white sand substrate, an the saltwater for the tank ‘instant ocean’ “. The miss loves that green mandarin goby an well Knowing what fish she wants I wanna stick with Western Pacific biotope. It will be a FOWLR for know until I get more acquainted with saltwater. But what all should I know about this?