Optimal CO2 Levels for Planted Aquariums Explained
Find out if you have optimal CO2 levels in your planted tank. Learn the ideal 25–30 ppm target, how to measure it, and signs of too much or too little CO2.
Aquarium Plants & Aquascaping
Your guide to thriving aquariums
4 articles
Find out if you have optimal CO2 levels in your planted tank. Learn the ideal 25–30 ppm target, how to measure it, and signs of too much or too little CO2.
Discover why Cladogonium ogishimae (clado) on your shrimp turns yellow and egg-shaped, what sporulation means, and how to treat and prevent outbreaks.
Identify the growths on your aquarium substrate and decorations — from harmless biofilm and diatoms to algae and planaria — and learn how to manage each one.
Find the best fish for eating algae in your aquarium. We compare top species by algae type, tank size, and compatibility to help you choose the right one.