Hi. I'm going to post this topic here because no one responded with their knowledge in the Nano forum. I'm a newbie whose had a 12g Eclipse System w/ LR setup for a couple months now. I know that there is tons of topics/threads out there on what fishes to put in a Nano. Most of what I've read indicates no more than two small fishes for a 12g, with many recommendations being a pair of Perc Clowns. Here is my problem: most say not to put three fishes in a 12 (a pair of Percs and a Royal Gramma for example), but nobody is saying why I shouldn't do this. Is it an issue of too much bio-load, making water quality/parameters difficult to maintain? If it is a bio-load issue, can larger weekly water changes (say 20%) be sufficient to export nutrients? Or is it an issue of aggression and/or territoriality? If two Percs and a Gramma are introduced at the same time and as juveniles, will this reduce or eliminate this possibility?
How about 2 1/2 fish, such as a single Perc, a single Orchid Dotty, and a Citron Clown Goby as the 1/2 fish? Please note: this is not a reef tank; it will contain 2 or 3 fish(es) and a team of hardy cleaning inverts to include a crab, 1 or 2 shrimp, some snails, and maybe a 2"-3" star, supplemented if necessary. [/b]
How about 2 1/2 fish, such as a single Perc, a single Orchid Dotty, and a Citron Clown Goby as the 1/2 fish? Please note: this is not a reef tank; it will contain 2 or 3 fish(es) and a team of hardy cleaning inverts to include a crab, 1 or 2 shrimp, some snails, and maybe a 2"-3" star, supplemented if necessary. [/b]
Yeah, I was actually surprised though that my royal gramma became territorial enough to attack shrimps. Lesson learned (he has a nanocube all to himself). I think in a 20 gallon your could do it, but the 12 definetely would be pushing it. Which 12 gallon was it again?
