Lights · Planted LED
Fluval Plant 4.0 32W
Adjustable mounting range 23–35 in; maker publishes PAR through 18 in depth.
Current-generation app-controlled full-spectrum planted LED rated at 2,550 lm.
Consider: Operation depends on the app. Check phone compatibility before purchase, then measure the tank span against its 23–35 inch mounting range.
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US version, item 16886. Check what’s in the box before you buy.
Fixture span
23 to 35 in
Choose your tank to see where it falls.
Check it against your tank →Specifications that affect fit
- Power
- 32 W
- Supply voltage
- 120 V / 60 Hz
- Dimensions
- 23 × 2.5 × 1 in (L × W × H)
- Published fixture size range
- 23–35 in
- Light reaching the plants (PAR)
- 640 at 3 in · 290 at 6 in · 120 at 12 in · 70 at 18 in below the light, by Fluval’s figures. Check it at your tank’s depth →
To see what it costs to run, enter the watts on its label and your daily hours in the electricity cost calculator.
Choosing between sizes
This fixture spans 23–35 in; Fluval Plant 4.0 22W spans 15–24 in. The two sizes don’t fit the same tanks, so choose by your tank’s length, not by the family name.
Plant 4.0 22W: details and fit →Before choosing this model
- Match fixture span and tank depth.
- Compare published depth-specific PAR with plant demand.
- Confirm phone compatibility before depending on app-only controls.
A light that spans your tank can still be too weak for demanding plants: see how to choose one.
Check it against your tank → Something not working? See the troubleshooting guide.
Included items & upkeep
- light fixture
- extendable brackets
- height-adjustable riser brackets
- power supply
Plan for the routine work
- Keep the fixture and connectors within manual placement limits.
- Use a consistent photoperiod and observe plant and algae response.
To budget for replacement media and supplies, use the first-year cost calculator. For how often and how to clean it, follow the maker’s manual.