Fluval Plant 4.0 22W vs Fluval Plant 4.0 32W

What changes for you, from the makers' published figures. Neither is "better": the right one is the one that fits your tank and how you look after it.

For a 20 gallon long (example)

Only the Fluval Plant 4.0 32W fits by its maker’s rating.

  • Fluval Plant 4.0 22W: Spans 15–24 in; this tank is 30¼ in long.
  • Fluval Plant 4.0 32W: Spans a 30¼ in long tank.

What changes for you

  • Power: 22 W against 32 W, which changes the running cost.
  • Fit: the Fluval Plant 4.0 22W spans 15 to 24 in, the Fluval Plant 4.0 32W 23 to 35 in. Measure the tank's rim before choosing.
  • Light at the plants: 18 in below the light, the Fluval Plant 4.0 22W gives 60 PAR and the Fluval Plant 4.0 32W 70, by the makers' own figures.

Next: Fluval Plant 4.0 22W: details and fit · Fluval Plant 4.0 32W: details and fit · All lights for your tank

Fluval Plant 4.0 22W

Fluval Plant 4.0 32W

Both drawn at one scale on a 20 gallon long (example), from the makers’ published dimensions; positions are approximate.

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Fluval Plant 4.0 22W

Adjustable mounting range 15–24 in; maker publishes PAR through 18 in depth.

Fluval Plant 4.0 32W

Adjustable mounting range 23–35 in; maker publishes PAR through 18 in depth.

Side by side

Fluval Plant 4.0 22W vs Fluval Plant 4.0 32W: published specifications
Published figureFluval Plant 4.0 22WFluval Plant 4.0 32W
Power22 W32 W
Dimensions15 × 2.5 × 1 in (L × W × H)23 × 2.5 × 1 in (L × W × H)
Mounting span15–24 in23–35 in
In the boxlight fixture, extendable brackets, height-adjustable riser brackets, power supplylight fixture, extendable brackets, height-adjustable riser brackets, power supply

Figures as published by each maker; see each model’s page for its sources. Open this pair in the full comparison tool →

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