Aquarium Decoration For fish Tank Ornaments #AK163Clay CICHLID Cellular Cave Suitable for: Aquarium， Tank . Beautification aquarium， for nitrification bacteria provide places， aquatic animals are special， without any pollution of aquatic creatures and damage.Market Price at 15US$+Size is about:13.5CM(L)X5CM(W)X4CM(H)We suggest you put them into water for 24--36 hours，then Dry by Sunshine/Airing Before put them into your Aquarium Tank.