HELP! Serious ick/ich problem. How do I get rid of this?

ok 1st u dont have to kill those fish but if theyre suffering and want to help ok. get a heater and slowly rise the temp up to around 85 degrees ich doesnt like hot temps. make sure you go slow tho. go to petsmart and get the API ich treatment, it is the best iv used. follow your directions. i hope this helps