Head to head

Fluval U2 vs Fluval U3

Our pick

Fluval U2

Internal Filters

Why this one

The Fluval U2 supplies filter media and adjustable flow for tanks within its stated 45 to 110 litre range.¹²

Read the review

Product photographs. Not to scale.

What Fluval U3 offers

The Fluval U3 suits a tank within its 150 litre rating and lets you adjust the flow rate and outlet direction.²³

2 models / at a glance

Key differences

Every specification ↗

Fluval U2

Fluval U2

Power draw · W5 W (Environment: 120 V / 60 Hz)²Lower preferred ↓

Fluval U3

Fluval U3

Power draw · W6 W (Environment: 120 V / 60 Hz)²Lower preferred ↓

What differs

Specification	Fluval U2	Fluval U3
Largest rated tank	110 l²	150 l²
Flow rate	400 l/h (Environment: 120 V / 60 Hz)²	600 l/h (Environment: 120 V / 60 Hz)²
Power draw	5 W (Environment: 120 V / 60 Hz)²	6 W (Environment: 120 V / 60 Hz)²

More details

Specification	Fluval U2	Fluval U3
Adjustable flow	Yes²	Yes³
Directional outlet	Not published	Yes³

Read the full reviews

Sources