Well, fertilized water was intended to be a hard, high-risk high-reward perk for effectively, not just destroying, but conquering biter nests, or a lot of increasingly expensive and time consuming farming. It’s such a great boost, 2x output, that it borders on game breaking for balance if used constantly, and a safe little factory in the corner that just generates it risk free kind of goes against the fundamental premise of it.
The recipes with just regular water are the same rate as the base mod, so if you're just running regular water, you're not losing out on anything from regular Baketorio. Fertilized water is just for those that want to work on a unique challenge and go above and beyond for a strong perk.
So, no, there is no way to make fertilized water on peaceful settings, and I don't intend to add one.
