Vethian said:
so, the adviser also tells me my filtration will be at 97%. Would a sponge filter and air pump be enough? My canister supports a bio-wheel attachment, but that would be wall cutting.
I wouldn't mind, but my wife may.
This data doesn't tell us what filtration you entered to result in 97%, so can't comment on that. But as for the sponge filter, it would be sufficient but not with the selected fish species here.
First, I have among my several tanks a 29g with the same dimensions, the "basic" 29g in NA. It is filtered by live plants and a dual Elite sponge filter connected obviously to an air pump. This tank in its present form was set up last summer; photo attached is what it looks like today. I had initially not intended lower plants, but put in a couple of pygmy chain swords just to add some green to get the cycle/biological system started, and then I had the larger sword in the big tank that I wanted to remove and it was in decent shape so I didn't want to just toss it onto the compost, and I stuck it in this tank. Fish include 14
Nannostomus trifasciatus (3-line pencilfish) added last August and just last week a pair of
Dicrossus filamentosus (lyretail checkerboard cichlid). The sponge filter is quite adequate with these sedate fish. I had been considering other fish including some catfish, perhaps a cory species, but when the
D. filamentosus appeared in a local shop my plans changed; I had this species back in 1985 but haven't seen them available locally since, so I wasn't about to let this opportunity pass me by. I intend spawning the species, and catfish being nocturnal are notorious for eating cichlid eggs/fry when the parents are not able to defend them.
To your situation. With your proposed species, I would want considerably more current from the filter than what a sponge will provide.
Corydoras panda occurs in mountain streams in the Andes, and thus requires water that has some current. They also do best at cooler temperatures than some tropicals; mine are in the 115g which is around 76/77F which is the warmest they should be. And that tank has a canister filter that provides a considerable flow at one end (deliberate for my group of
Centromochlus perugiae (Driftwood Catfish) and the panda corys "play" right in the fairly strong current from the filter return much of the time. I have roughly 12 species of cory in this tank, and the pandas are the only ones who do this.
If you are set on the pandas, I would consider a small external canister filter, or an internal power filter.
Byron.