Yeah, those are usually hit or miss with their sales. Once I had asked for the RC Cavalier recipe kibble and I was given RC
Japanese chin.
I'm fairly confident you were given coarse aquarium sand
I see. Did you get this from any know chain pet store, or the neighbourhood-type? I guess the only way to ask for it would be "χαλικάκια για την χώνεψη". Wondering if they sold you coarse aquarium sand, high in calcium
Did the employee disclose the name of the product they sold to you? If so, what was it? I personally have not seen anything meant for digestion in the pet stores around me. Only cuttlefish bone and calcium blocks meant for small exotic birds