Just do bear in mind the ich lifecycle, if fish are losing cysts it doesn't necessarily mean they're in the clear unfortunately, because part of the lifecycle involves dropping off and dividing. See this image ->
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Raising the temperature will speed up the life cycle of the parasite, so it will stay on the fish for a smaller amount of time, and divide quicker. This can be useful in combination with medication because it gets the parasite to the 'free swimming' stage quicker, but comes at the cost of stressing fish further.
Honestly this sounds fine - boiling water is fantastic for sterilising, not much will survive it. If it's sunny I always recommend just sun-drying, the UV light is very anti-life
For what it's worth, bleach is surprisingly completely fine to use (just make sure it's THIN bleach, the thick stuff has surfactants that will stick), I sometimes bleach stuff myself (such as CO2 atomizers or Seachem's Purigen, I also bleached my Seriyu rocks before putting them in the tank). Bleach will evaporate, so if you fully dry out whatever you have bleached, there shouldn't be any traces left. Just as a precaution, if you ever bleach anything then make sure it doesn't smell of bleach when you put it back in the tank, they shouldn't have any smell of bleach to them at all.
It's general practice to just simply rinse whatever you've bleached after it's soaked for a while, then air-dry (ideally in the sun). If you need to be extra certain it's safe, then you can soak the item in Seachem's Prime, this will remove the bleach but you usually have to use fairly large amounts.
You're most welcome, honestly I've had run-ins with the majority of parasites. When I had my first setup, a 182L tank, I fully stocked it without quarantining, even though I had read to. I thought "oh everyone online is probably being dramatic, I doubt it's needed". Yup, I learned pretty quickly that was wrong when my main tank suffered from Ich and gill flukes.
Fish shops unfortunately don't tend to care for fish health, they ship them in cheaply and just want to sell them as fast as possible. A large amount of fish are either wild caught, or kept in tanks with wild caught specimens. This means that parasites are often not uncommon.
A very wise decision.
![Face Palm :facepalm: :facepalm:](/forum/styles/default/xenforo/smilies/facepalm.png)
I also got my ich-fish from Tropco lol. They honestly have horrific practices and I would avoid them like the plague. I actually wrote about the experience on another thread -
Link