A pause button would have been nice, but instead I died, took notes, planned ahead and made it to day 110 (and counting) with a perfectly stable ecosystem :)
Feels kinda inspired by Terra Nil, at least it has the same chill vibe which I like. With more levels / puzzles I could spend some time on it!
EDIT: Also FYI, Fungal decomposer and Compost thingy are the same aside from energy cost (unless I missed something)