There's a lot of hardened black algae or film on almost all of my Anubias and Hygrophila, some on the java fern leaves. The tank does not have CO2 injection and has 4 - 21 watt T5s (3 - 6700K and 1 Colormax). Filters used are two Aqua Clear HOB filters. Is this caused by poor filtration? Or too much nitrate due to overfeeding?
The leaves of the Hygrophila Stricta are pale green almost light yellow in color. Will CO2 injection help get rid of this black algae?
The leaves of the Hygrophila Stricta are pale green almost light yellow in color. Will CO2 injection help get rid of this black algae?