Did it several times and.
How to treat ick with salt. Remove any carbon in the filter before beginning any treatment as it will render the medication useless. Increasing the temperature will reduce the life cycle of ich. Most fish will not be affected by the temperature.
Salt does not kill ich. To treat ich with salt you should calculate the quantity required for the whole tank volume and add it to a small amount. How do you treat ick naturally?
Sorry all but quick cure is my way of dealing with ich. Slowly raise the temp to 86º f and leave it for at leafs a week after all white spots have disappeared. If you use table salt, make sure it has no added iodine.
Since you removed 50% of the water, you removed 50% of the salt. For salt, you will need a container that is large enough for your pleco to fit in and at least 2 inches of water. Using copper (copper sulfate) to treat saltwater ich.
The only time you need to add more salt is when you change out the water. Raise the temperature of the aquarium by 2 degrees c or 4 degrees f. Adding salt is beneficial to help heal the tiny wounds caused by the ich.
But raise it no more than 1 to 2 degrees a hour. Salt and heat are two common safe methods for treating ich in plecos. Raise the temperature to 80f this will speed up the life cycle of ick and makes killing them much easier.