



Tank is completely infested with algae. What can I do?
Hey everyone. This 20 gallon tank is completely infested with hair algae, brown beard algae, and cyanobacteria. They are covering my plants and causing nutritient deficiencies, eventually killing my anubias and java fern. They spread so rapidly that manual removal is impossible. I completely turned off the light and planning on keeping the tank in total darkness for a few days without feeding my fish. Nitrate levels are below 30 ppm and nitrite is 0. TDS is 300 ppm and pH is slightly above 7. I use potassium fertiliser but won't use it until the algae is removed. I started treating the tank with Macrol but not sure if it will work. Any advice is appriciated. I have 3 nannacara anomalas, 1 otocinclus, 4 corydoras and 1 sturisoma panamense.