One effective way to tackle an algae-covered fish tank is to break the process down into regular maintenance tasks. Physical removal should be your first step—use an algae scraper or magnetic cleaner to clear the glass, and a clean toothbrush or small brush for decorations, rocks, and tough spots. Hot water works well for items that can be removed, and letting them dry out completely can kill stubborn algae spores. Never use soaps or household cleaning agents inside the tank; even tiny residues can harm your fish and plants.
White vinegar is a safe option for cleaning glass or hard items—but always rinse thoroughly under fresh water before placing anything back into the aquarium. For live plants, trim off leaves heavily covered with algae to encourage healthy new growth.
Beyond cleaning, try to find the cause. Overfeeding, too much light, and infrequent water changes often make algae blooms worse. Cut back on feeding, keep your tank out of direct sunlight, reduce the amount of time the aquarium light is on, and commit to partial water changes every week. Adding algae eaters like certain snails or fish can also help control algae, but make sure they’re suited to your tank environment and won’t outgrow it. Preventing new algae is much easier than constantly cleaning!