LifeRock Nano Tree is the perfect aquascape for nano sized marine and reef aquariums. This complete modular structure has two nano arches, one nano base, and one 7 inch Reef Rod to make creating the perfect nanoscape easy and fast. The final sculpture is uniquely yours as there are numerous ways to set up your display, and it ranges from approximately 11 x 7 x 11 inches, ideal for just about any nano tank. Like all LifeRock, LifeRock Nano Trees are infused with living, spored bacterial to make help with cycling, and as always NO CURING NEEDED!