Blue Algae, Cyanophyta

Difficulty: Easy-Medium
Light: Medium
Ph: 6.8-7.5
Gh: 2-20 dh
Temperature: 20-28ºC
Size: up to 30 cm diameter
Growth: Slow
+Info: Breaking ball in two parts generates new balls.
First photo is cladophora agregophila.
Second photo is the same algae in free form, may cause plague.