Am I missing something or is artificial soil a bit of a pain to unlock here? You need to craft 500 Nutrients, but without the soil you can't get it from fruits, so you're stuck crafting the nutrients from spoilage at a 10:1 ratio, forcing you to get 5000 spoilage (EDIT: a bit less because the nutrients you craft can then spoil into spoilage which can then be recrafted into more nutrients, but it still results in a Large Amount) from space or from letting fish rot.
This is, to say the least, rather tedious because spoilage isn't more common in space than the other rather rare Gleba resources, so I feel like I'm missing something obvious.