Do you actually have an algae problem?
Oto's are generally better in groups of at least
3. They're very sensitive to bad water parameters, as well. So while they don't get large and do well in small tanks they seem to be difficult for most to keep alive unless they are adamant about partial water changes. They also seem to thrive more in planted aquariums.
As far as the diet goes.. algae wafers, zucchini and most other plant based foods are ideal to supplement.
Originally Posted by Homedog98
Hey, I'm looking into buying a (few) ottos catfish for my ten gallon. Right now there is a rainbow shark (don't freak, I'm working on an upgrade) a bleeding heart tetra, a black widow tetra, and a rosy tetra. Would adding just one be ok? Do they need anything special? Am I moving in the wrong direction? I'm open to more suggestions, but I need at least one algae eater, and I'd like it to be a fish. I'm also concerned as to whether or not I should add driftwood. Please answer quickly as I have until about three pm tomorrow to decide. (I can wait, but speak now or forever hold your peace!)