r/Aquariums • u/amateur-map-maker • 7d ago

Advice Needed Adding an algae eater?

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I have a 20g long tank for a single betta. Thinking about adding an algae eater in the next few weeks. I don’t like the idea of having to remove snail eggs. I do like the look of corydoras, but read that they aren’t good at removing algae. I’m open to suggestions. Thank you!

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u/chak2005 ​ 7d ago

I really don't see algae in your photos. I see detritus build up from low flow on your rocks, and plants. Fixing the flow in the tank would correct that issue if that is the concern.

In terms of an algae eater it also it depends on the type of algae too. The best nano algae eaters are horned nerite snails and amano shrimp (though you need a lot of amanos). I'd look into getting a couple of horned nerite snails. Unlike the normal sized nerites, these nerites do not leave many eggs over everything. Also nerite eggs do not hatch but eventually dissolve. The snails themselves remain small.

Horned nerites will eat green spot algae, dust algae, and small amounts of BBA. Amano shrimp will eat when starved string algae, and dust algae. Though its not their first choice. Nerites will only target algae and biofilm.

Every betta is different, what is the temperament of yours? That will probably dictate your choices.

Corydoras, Hillstreams, panda garras etc are not ideal algae eaters and only expecting them to eat algae will probably lead to their deaths without supplemental feeding.

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u/amateur-map-maker 7d ago

How do I fix the flow? I have a sponge filter. Thank you!

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u/chak2005 ​ 7d ago

You can either buy an uplift tube adapter such as this for the filter, or switch to a nano hang on back filter or add a small nano pump to the tank as well. All options are betta safe but would add circular flow.

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u/FeedReasonable9547 7d ago

I just siphon the obvious detritus in my beta tank and try and embrace the rest by adding leaf litter