Ya I guess it kind of looks like three spots of salts. They are like white bumps.It is very hard to tell from the photos whether the fish has ich or not. You can see the fish - do the spots look like grains of salt stuck to the fish?
If it is ich -
Moving the fish to a bucket for 11 days will not work, the parasite will go into the bucket with them, then back into the tank.
Heat is the best treatment as all the medications are rough on fish. Buying a heater just for the duration of treatment would be the better option. The water temperature should be raised to 86 deg F and kept at the level for 2 weeks.
Thank you so much for your help I really really appreciate it. I will go look for an adjustable heater and an inside thermometer. Do you know if the heat will kill or damage my live plants at all? Or the good bacteria in my tank? Also, how much and often do you reccomend doing water changes during the two weeks? I am very grateful for your help, thank you.The other fish will be fine at that temperature for 2 weeks. heat kills the parasite in the third stage of its life cycle, the free swimming stage. You shouldn't need any treatment.
As you don't need a heater on a regular basis, you don't really need an expensive one as it will spend most of its life in the cupboard. Just make sure it is adjustable as there are some that heat only to a preset temperature. As I'm in the UK I don't know which brands to look for in the US, our American members should be able to suggest some heaters.
I suggest you buy a thermometer as well, the kind that go in the water rather than the stick on the outside type. Heater thermostats are rarely calibrated accurately and the way to set them is not by the dial on the heater but by the the temperature of the water. There is a risk that you could set the heater to 86 and find it heats the water to only 83 deg (or even 88)