wait hold up I don't need a filter? ......Now I'm really confused and ok no canister thank you for the infoDo not do a canister. That is worst option. It needs way tooo much attention on a salt tank in most cases and not worth it.
A hob is totally fine and an AIO isn’t better. An AIO just looks cleaner since you can hide the heater in it and not have stuff hanging off.
Hob is totally fine and appropriate!! If that is what you like and in your budget. Go for it!
You don’t even need a filter at all in a salt tank lol people run tanks without them and have tanks in cookie jars.