Fluval U2 Underwater Filter Loc-Line & Returns and confirm both output nozzles

and confirm both output nozzles are flowing properly before cycling the aquarium

It is nitrate and phosphate free and can be dosed directly to the aquarium or used as a food soak

Use when high ammonia is detected or when adding new tap water

0°F / -50

if it falls onto its back on the aquarium's sand it is not physically able to flip over and must be assisted

Fluval U2 Underwater Filter Loc-Line & Returns and confirm both output nozzlesFluval U2 Underwater Filter The Fluval U2 Underwater Filter is a compact internal aquarium filter designed for aquariums up to 30 US gallons 110 L, providing 3 stage filtration, water movement, and aeration where external filtration is not possible or not preferred. Compact Internal Filtration for 30 Gallon Aquariums The U2 installs fully inside the aquarium, making it a practical choice for tanks where rear clearance, cabinet space, or external