Improve water movement and aquarium health with the Flex/EVOXII/Spec XV Nozzle Set. Compatible with aquarium kits from 9 to 16 gallons, this directional flow outlet enhances circulation, reduces stagnation, and boosts oxygenation—creating a healthier environment for your aquatic pets. Straightforward to install and adjust, the nozzle ensures targeted flow where your tank needs it most. Durable, fish-safe materials make it a reliable upgrade for any aquarist.