Freshwater
Azolla rubra
Salviniaceae
Salviniaceae
Azolla rubra, known commonly as red azolla and Pacific azolla, is a species of aquatic fern native to Australia and New Zealand. In New Zealand, it is also known by its Māori names returetu, roturotu, kārearea and kārerarera.
The home of rainbowfish: water, substrate, plants and light for rainbowfish, blue-eyes and peacock gudgeons, with a long aquarium and open water in the middle.
Light, nutrients and CO₂ in balance, low tech versus high tech, and how to read from the leaves what your plants are missing.