Sorry Squeakfish- Did I bother you? I know you can use regular non-iodized salt- in fact it is what I use. Saying aquarium salt is just force of habit I guess.
Get the frogs out! They absolutely DO NOT handle ammonia AT ALL. No matter what, you must remove the frogs. Ich does not affect them, but they don't handle salt well and the ammonia becomes deadly quick for frogs.
It's better to increase the heat and add salt instead of using medications. It's less stressful for the fish.
I do use salt with every water change. Ive alway been a huge fan of aquarium salt. The salt has never bothered my adf's. I never use copper in my aquarium. Quick cure doesn't have copper in it.I agree- get the frogs out. Do massive water changes as many times a day as neccesary to get the ammonia down. Turn the temp up in your tank to 84 deg and add aquarium salt-(The high temp accelerates the ich lifecycle- thus it dies faster. Salt inhibits the ich reproductive cycle.) You have mollies & platies- mollies & platies (and other livebearers) actually need some salt to do well. Don't use that copper crap- it will kill your inverts.