Question

what is BGA in plants?

Answer 1

Blue-green algae (BGA) ... However, in the aquarium hobby we know cyanobacteria as dark green, blue-green to almost black coats on aquatic plants, decoration or the substrate. They feel slimy to the touch and are thus sometimes called slime algae.

Answer 2

Blue Green Algae (bacteria)

BGA may increase their numbers significantly when there is an imbalance in microbes of aquarium as they lack competitors for nutrients. This phenomenon occurs most frequently during the cycling phase of a tank, as the biological system is still finding its balance.

Causes for BGA;

Low NO₃

Insufficient Flow of water