4 ms·

I figured out you can limit the living area of Daphnia using glass and sand, and then feed the fishes with only grass.

• eric-hu 3y ago
  I tried this out and it works, but it felt like cheating. The algae production counts towards o2 balance, but that doesn't make sense if their water is sectioned off.
  • imakira 3y ago
    Yeah it's like cheating, and I cheat myself by thinking O2 can exchange through sand :D