How many blackskirt tetras can I put in a 20L tank? These are the only fish in the tank. I want a large school of blackskirt tetras in this tank. Is 15 too much for this tank?
Don't get a common pleco. It will outgrow your 29g. If you want a pleco, get a bristlenose or rubbernose pleco. A school of tetras would go well with the dwarf rainbows and cory cats.
Anyone use Aqua-Tech filters from Walmart? What media do you use? I was thinking about replacing the cartridge with sponges and Biomax for the bio-media.