anaerobic problems. It needs a richer source of oxygen which it's not going to get inside the tank or in the substrate. Yeah matrix is pumice stone. Old volcanic rock.
1x 180g - 1x 75g - 4x 55g - 1x 29g - 1x 20g
Geo's - Cory's - Loaches - Ram's - Firemouths - Convicts - Endlers - Tetras - Plants - Jack Dempsey's - Shrimp