29/07/2020
Best Algae Eaters for Freshwater Aquariums
If your aquarium is covered with unsightly algae, you need some hungry helpers to get the outbreak under control. In this top 10 list of amazing algae eaters, we’ve gathered animals that are not only safe for aquatic plants but can often work together for increased effectiveness.
At Aquarium Co-Op, we’ve sold thousands of live plants, and one of our main concerns is keeping the plants as free of algae as possible. That’s why we utilize the most effective algae eaters in the aquarium hobby for our holding tanks. A key lesson we’ve learned is that each algae eater has a unique mouth and body shape that is ideal for eating specific types of algae. Therefore, we mix different species of algae eaters in our aquariums to consume the different kinds of algae that may appear. If you have a really large tank, start with just a few algae eaters on this list, adjust your tank lighting and plant nutrients, and wait a month to see what impact they have on the algae. If you need additional help, consider getting more clean-up critters from this list.
1. Reticulated Hillstream Loach
This oddball fish is one of the coolest-looking algae eaters you will ever see. Growing up to 3 inches (7.6 cm) in size, it looks like a miniature stingray covered with golden-brown dots and intricate black stripes. Using their strong gripping abilities, they can easily clean large, flat surfaces like vertical aquarium walls, rocks, and broad plant leaves. Think of them like your personal window washers for diatoms and other flat kinds of algae.
They can sometimes be a little territorial toward their own kind, so it’s best to get either just one loach or at least three loaches in a group to even out the aggression. Keep them in cooler waters with a stable pH, feed them high-quality sinking foods like Repashy gel food, and you may be lucky enough to see some baby loaches pop up in your aquarium.
2. Amano Shrimp
While hillstream loaches are great at consuming flat types of algae, you may also need a more nimble-fingered algae eater that can reach into narrow gaps or tear off chunks of fuzzy algae. Meet Caridina multidentata, a clear-brown dwarf shrimp that can reach 2 inches (5 cm) in length. They are one of the rare animals that will eat black beard algae and hair algae, but only if you don’t feed them too much. Given their small size, you’ll need a group of at least four of them (or even more) to make a significant dent in the algae growth.
3. Nerite Snails
ornamental snails that are adept at both scavenging and eating algae. They’re especially handy at scraping off the very tough green spot algae and other algae found on plants, driftwood, and decor. Unlike most other types of aquarium snails, their white, sesame seed-like eggs will not hatch in fresh water, so you don’t have to worry about an out-of-control population boom. While there are many beautiful varieties to choose from (e.g., tiger, zebra, horned, and red racer), we personally like olive nerite snails because they seem to be the hardiest. Just don’t forget to provide extra calcium in the water (using crushed coral or Wonder Shell) and in their diet (using nano food blocks) to help with healthy shell development.
4. Cherry Shrimp
If you did a direct, head-to-head comparison, a single cherry shrimp (or Neocaridina davidi) isn’t as efficient at algae eating as an amano shrimp. However, these brightly colored dwarf shrimp breed easily in home aquariums, and with a decent-sized colony, they provide excellent preventative maintenance against the buildup of excess food and algae. Their tiny limbs are perfect for picking through the substrate, plant roots, and other tiny crevices, and they’re happy to consume anything that’s digestible. At 1.5 inches (4 cm) long, cherry shrimp come in almost every color of the rainbow and can be easily sold for profit to your local fish store or other hobbyists.
5. Otocinclus Catfish
The catfish of the Otocinclus genus are commonly known as otos or dwarf suckermouths because they typically stay around 2 inches (5 cm) in length. Their smaller, slender bodies allow them to fit into tighter spaces than other algae-eating fish. Like the hillstream loach, their mouths are ideal for eating diatom algae from flat surfaces, and you can find them usually hanging out on the aquarium glass or plant leaves. Otos are prone to being underfed, so make sure you give them plenty of Repashy Soilent Green and vegetables like canned green beans and blanched zucchini slices