Skimmers, lights (Especially LED), reef controllers, return pumps. As far as food, there is one particular brand I have came to love. IQF Pro Salt Krill. I have provided a picture for reference.



Here is a product description:
PROSALT KRILL :
This is the largest of the Krill family. ProSalt uses the finest quality Krill that are flash frozen and then packed with only the minimum amount of water. Good for all medium and large carnivoire and omnivoire fish.
(Available in 4oz flat pack, 8oz flat pack, 16oz flat pack, 10oz IQF and 5oz IQF, and 9oz ProPops in tub.)

http://midjerseypetsupply.com/index....ROSALT%20KRILL