This is the way.You should start your own thread, but in short, I would put all the old rock in a new brute can from Home Depot, fill it with fresh water and let it sit a few days and then test for phosphate and Copper. Copper can be removed with Cuprasorb if it is high, and phosphate can be removed with lanthanum chloride if it is high.
Once you know those parameters are good, dump and refill the Brute with salt water and rock (which look nice btw) and add your ammonia and Dr Tims into the bucket, with a heater to keep it about 80F. After 10 Days,or 2 weeks if you want to be really sure, the rock is cycled. Fill the tank 1/2 way, move the cycled rock, rinse and add the sand (See the sand rinse thread, fresh water rinse doesn't hurt bacteria) to avoid dust clouds forever.
Once the sand and rock are all in, fill the tank and start the filtration. Add fish. Good luck