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I was wondering if Kuhli Loaches dog in fine grained gravel? I have Eco Complete fine grained gravel and some black plant sand. The sand is below the gravel.
they will bury themselves if its not to compact so yes they "dig" but yours might be too compact for them to do so. when i had mine in gravel they would bury themselves under it and disappear completely but now that i have sand its too compact for them to do so
If the Kuhli loaches would happen to bury themselves the water would get cloudy due to the type of gravel I have. I will probably stick with Cory Cats.