ok heres my views.
i suggest you shut the tank down now, and start again, its only been a week and even though its painful you will thank me for it in 3 months time, so strip the tank, chuck out the crushed coral and wash out the tank.
then go to your local store or a store and get 150-200 pounds of rock, place in the tank and when your happy with the look add 1" of aragonite medium grade sand around it, try using ro-di water from the start as well, you will also need to purchase at least 2 powerful powerheads for your tank, id suggest 2 modded tunze 6025s or 2 tunze 6045s, you can use the canister but run it empty at this stage, it will be useful later for chemical filteration, but thats a while away yet. when you position the rock try to keep it away from the glass, this will help the flow and will be easier to clean the glass in the future. you will need 3 test kits to start as well ammonia, nitrite and nitrate and follow the earlier instructions i posted on here.
this is painful and costly i know, but in the long run is essential, you will not have success with your current set up, crushed coral is crap tbh, and you have no rock or flow, sorry to be the bearer of bad news buddy, but honestly i think you need to start again.
let me know your thoughts on the matter, and theres still plenty more i can tell you as well but im starting with the basics to get you going
michael