Secondary Structure. This is where the secondary structure comes in. The secondary structure is a repetitive 3-D structure of a protein. These are things that people often come into contact with when they're looking at protein structures.
If your fish are more heat tolerant, try increasing the temperature to 32 C/89.5 F for the first 3-4 days to kill the Ich. Then reduce temperature slowly to 30 C/86 F, and hold it there for an additional 6-7 days, or until a total of 10 days have passed.
Using Goldfish Ich Medication. 1  1. Change 25 percent of the tank water and remove any waste in the tank. 2  2. Raise the temperature of your aquarium water to 86 degrees Fahrenheit (30 degrees Celsius). 3  3. Use ich medication.  4. Add salt to the tank 1  water. 5. Wait a couple of weeks for the ich to disappear.