im not sure but i do know that there are some animals that do swallow rocks, such as alligators, to help with digestion.
oceanobsession289;1409786; said:Farmers put sand or small pebbles in their chickens food to help with digestion as well. If it's good for alligators and chickens, maybe it is for fish too????
Gr8KarmaSF;1409824; said:I was thinking the same thing but then again a fish to a chicken is a huge gap in stomach function.
Anybody think that the sand could actually damage fish gills as it passes through during feeding?
95Harley;1409949; said:I would assume it would be ok as in the wild some Reef fish (Parrotfish) actually eat corals and their excrement is actually Sand.