To get rid of algae without all the chemicals and without cleaning your tank daily, you can get an algae eater like the Siamese fish. This fish will feed from algae and keep your tank clean and clear.
The Siamese Algae eater is a freshwater fish found in every pet store. Although they have unique features, very often they are confused with other fish so pay great attention when buying one.
The Siamese fish is considered one of the best algae eaters, as it is extremely active and energetic. If you have more than one, you will be happy to see them swimming around in a group and feeding from the same place until there is no algae left in your tank. Some Siamese might be aggressive with other fish, thus observe them for a few days to make sure they don’t hurt other creatures in the tank. It might be a good idea to keep them away from small or very calm fish, as they can be disturbed by this active species.
Although this fish will eat algae, especially red algae, it will not miss the chance to “steal” the food of other fish. The older they are, the more they will eat other kinds of food. This means feeding them less often, otherwise they will not be interested to eat plants anymore. A good way would be to limit the amount of food in a part of the tank where the Siamese does not frequent often.
Most of their time is spent in the bottom levels of the tank. Here they swim around until they find a spot covered in algae, they’ll likely sit here until it’s gone.
If you keep a few together they’ll form groups and you’ll find them feeding together in the same area.
They’re rarely aggressive, but they’re quite energetic and swim around quickly. This means that they shouldn’t attack other fish but might disturb and unsettle any calmer species.
If they are aggressive then watch them closely for a couple of days, they might have to be separated if the problem persists.