So I am starting up a nano reef tank I am using my old FW tank and DIY cabinet. This is what it looks like The tank is 46x32.5x30.5cm So lighting there is currently 2x10w t8 plant grow tubes that I will replace in time but for now will leave them in. So I will be adding a 15w Marine t8 tube and ballast in the next week to add to that. LEDs are far too expensive and T5 is too long for my hood. I am going to use natural sand, and I have washed it and letting it dry before putting it into the tank. I would like to add live rock to the setup and in the future a few mushrooms and zoes J I have a internal canister filter rated at 400l/h that I will be using, it has carbon already and sponge media. What else can I put in it as filter media? What are the best salts for nano tanks? Are there differences between them?