How many corydoras to keep?

[onyxim]

I do about 25% weekly. Sometimes more if the nitrates creep up. I test the water every few days to stay on top of it.

[frosta]

That's a solid routine. Corydoras appreciate clean water, so keep that up. Also, make sure you're feeding them sinking pellets or wafers. They're not great at competing for food at the surface.

[haply]

That's a solid routine. Corydoras appreciate clean water, so keep that up. Also, make sure you're feeding them sinking pellets or wafers. They're not great at competing for food at the surface.

Yep, and variety is key. They love frozen bloodworms or brine shrimp too. Just don't overfeed, it can mess with your water quality.

[frosta]

Totally agree. Overfeeding is a common mistake. I usually feed mine a small amount twice a day, and they're doing great.