Amtra colored pebbles for aquarium bases, thanks to these colorful pebbles you can create your own aquarium fish tanks safely. Aquarium pebbles are very safe, non-toxic and do not emit carbonate. It is used in fresh water and sea water as well. Arrange a layer 4 cm high in the front and 7 cm in the back, which will create a difference in level and give depth to the fish tank landscape. Get it now and enjoy instant discount and fast shipping!