Is It Harmful

[tonyale]

So today I bought 3 spotted corys in I was watchIng them stuff them selfs. With the dirt at the bottom of my very dirty 10 gal as I watched them go to town I thought I saw one eat a piece of gravel is it bad

 

[tribalbrit]

Don't worry about it, it'll be fine

They don't live on dirt though, only sift through it for left over food.

 

[Crossfire]

And they really do need sand to eat properly and so their whiskers don't get damaged