05-15-2008, 01:57 AM
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Beware with those Otos! In a completely cycled, months-old aquarium with reasonable algae growth and perfect water parameters, I was unable to keep a series of four Otos alive in my puffer tank. All were drip acclimated over long periods of time to get them used to the water. None of the fish ever showed signs of disease or physical damage from any of the other fish. One died after about 24 hours, another lasted three days, another about a week and a half, and the last one for about six weeks. I still have no clue as to what killed these fish, especially with the other fish in the tank being so healthy. A lot of what I've read says that these fish are just very, very difficult to keep alive. While they were alive, they did a phenomenal job of getting rid of algae.
Since you can't have snails in the tank, it might be possible to stick a smaller species of pleco in there for algae control. I have a clown pleco with my dwarfs in a 20g and he is never bothered. He spends almost all of his time latched to my driftwood (a must if you get a clown) but he must hustle and bustle all over the tank at night because any algae that grows during the day is gone by morning. They do get fairly large for a 10g and produce a lot of waste, but it's usually a good idea to overdo the filtration on a puffer tank anyway so it might not be a problem in the end.