Welcome to AA! Kudos to you for coming and researching first before doing anything.
1. Salt - Salt is highly a matter of personal preference, but in some part salt selection depends on your tank type (FO
, Reef). It appears you want to work up into a reef scenario. Again, it's highly a matter of opinion but I use Reef Crystals with great success.
For your initial fill (when the tank is empty) you can do whatever is easiest for you. FW
in the tank, then add salt is okay for this if you want. For your water changes, though, you'll need to store the FW
and mix the salt in a spare container with a powerhead and heater for at least 24 hours before adding new water to the tank.
2. Dry Aragonite sand is really good, and pretty cheap. Don't waste money on "live" sand that's been sitting on a shelf somewhere. The sand will become live over time. There's a few different grain types to aragonite, and that's mostly personal preference too on how you want the bed to look.
3. You'll want eventually to add some snails and maybe hermit crabs as your clean up crew (CUC). You could have a shrimp in there, and probably a pair of clowns would be okay, but that'll be about it for fish.
4. If you get LR
from an LFS
, they should be able to tell you if it's cured or not. If you order it online (often cheaper) you'll have to cure it after shipment anyway. Since you need to cycle your tank anyhow, you can cure the LR
and cycle the tank at the same time, so don't worry too much about getting cured rock. Adding LR
to an established system is where you have to be careful about ensuring the rock is cured to avoid an ammonia spike.
5. Corals first, fish first, doesn't really matter. Typically fish will come first, you'll need to wait a little while for your system to really get established and stable before adding corals as they're much more sensitive than fish are.
The only other comment is on your anemone. Anemones need a really stable environment, so most recommend that you wait 1 year or so of having your tank setup before attempting one of those.
Again, welcome to AA!