Has anyone tried Fish tank heaters?
Could you get one that goes up to 100?
If you mean the glass immersion heaters, I'd strongly recommend no. You'd have a very intense local source of heat, which would tend to denature or kill anything coming into contact, leaving a good part of the rest of your vat untouched; you'd have to obviously stir, and as the heaters are glass, well...
Were you talking of the immersion heater, or an inline heater? Either way, I'd say not a good option at all, sorry.
All true, just a thought
Nothing wrong with that, Jaspar. Welcome to the forum. :)