Sep 17, 2025
A little update on my 25L (6.6g) filterless Walstad guppy tank 🌿🐟
This setup uses a thin layer of garden soil capped with gravel, letting the plants handle all the filtration naturally.
My two new lyretail guppies have settled in nicely, while my yellow guppy keeps showing off and sparring with them.
The blue guppy stays away most of the time—except at feeding!
The cherry shrimp colony is bouncing back fast, even after moving some to new tanks and sharing a few with friends.
Hair algae has cleared, and my Rotala rotundifolia is starting to glow with yellow, orange, and pink now that I’m thinning out the duckweed more often.
Stable water, healthy fish, thriving plants—exactly what I hoped for with this Walstad setup. 💧🌱✨
