Leveraging Craigslist to Get a Discus Operation Up and Running Cheaply
Thoroughly clean it with cold water without soap or harmful chemicals and complete the setup of your new tank. If the tank you purchased came with equipment, inspect it, clean it, and purchase additional items as ncessary in order to complete the setup.
Once the setup is complete, switch on the filter, and begin circulating water through the setup in order to get the nitrogen cycle going. Leave the water circulating in the tank for at least two weeks before introducing any fish. During this time, ensure that PH, temperature, and lighting requirements for discus are met.