The mixture rule states that any mixture of a listed hazardous waste and a non-hazardous waste remains regulated as a hazardous waste. Mixtures of characteristic wastes and non-hazardous waste are regulated as hazardous waste if the resultant mixture continues to exhibit the characteristic.
1 Wash the cannula in soapy water and rinse it with a solution of 10 parts water and one part vinegar. 2  Rinse thoroughly with hot water and hang to dry.  This connects the nasal cannula to the oxygen concentrator. It doesnât need to be cleaned, but plan to replace it every 6 to 12 months advises the ATS.
How often this needs to be done depends on the size of your tank, the number of fish you have and whether or not you have a decent filtration system. If the tank is cloudy due to overstocking or overfeeding, perform a 20 percent water change every day until it clears up. Doing so will remove the nutrition the bacteria relies on and it will soon die off. Do not change more than 20 percent, no matter how impatient you feel. Doing so will stress out the fish.