Filamentous algae are among the most common and for many, the most frustrating types of algae found in aquariums. Recognizable by their bright green color and fibrous, thread-like appearance, these algae often grow on surfaces like plants, driftwood, rocks, and decorations but struggle to develop on smooth surfaces like glass. Despite their bad reputation, filamentous…

Fish tank maintenance comes down to one rhythm: a partial water change every week, a filter rinse every two to four weeks, and a full water test every month. For a freshwater tank that has already finished cycling, that routine keeps nitrate low, bacteria alive, and fish healthy. Short answer: change 10 to 20 percent…