Fluval Plant 4.0 LED 46W 35–49" – Freshwater Planted Aquarium Light
The Fluval Plant 4.0 LED 46W is a freshwater aquarium light designed for planted aquariums, aquascapes, and community tank displays. This model fits aquariums from 35–49 inches / 88–126 cm using adjustable mounting brackets.
The Plant 4.0 LED can be controlled through the FluvalSmart App using Bluetooth. Aquarists can adjust brightness, individual color channels, and daily lighting schedules to match the needs of their aquarium plants, fish, and maintenance routine.
Key Features
- 46W LED Fixture: Designed for medium to larger freshwater planted aquariums
- Fits 35–49" Aquariums: Adjustable mounting brackets fit tanks from 35–49 inches / 88–126 cm
- Freshwater Plant Lighting: Made for planted aquarium and aquascaping setups
- Bluetooth App Control: Adjustable through the FluvalSmart App
- Custom Light Scheduling: Allows sunrise, sunset, and daily light programming
- Adjustable Color Channels: Individual channels can be adjusted based on the aquarium setup
Product Information
- Brand: Fluval
- Product Line: Plant 4.0 LED
- Model: 3549
- Wattage: 46W
- Fits Aquarium Length: 35–49 inches / 88–126 cm
- Control: Bluetooth through the FluvalSmart App
- Aquarium Type: Freshwater
- Best For: Planted aquariums, aquascapes, and freshwater display tanks
Best Uses
- Medium to large planted aquariums
- Freshwater aquascaping displays
- Community freshwater aquariums
- Low to moderate-light plant setups
- Higher-light plant setups when configured appropriately
- CO2-injected planted aquariums
- Standard aquariums around 40–75 gallons, depending on tank dimensions
Why Use Adjustable Plant Lighting?
Planted aquariums can benefit from lighting that can be adjusted based on plant type, tank depth, nutrient levels, CO2 use, and algae management goals. The FluvalSmart App allows users to change intensity and color channels instead of relying on one fixed light setting.
Lighting should be balanced with nutrients, water changes, plant density, and CO2 if used. Too much light without proper balance can contribute to algae, while too little light may limit plant growth.
Setup & Use Tips
- Install according to the Fluval manufacturer instructions
- Confirm the fixture length fits the aquarium before purchase
- Use the FluvalSmart App to adjust intensity and schedule
- Start with a shorter photoperiod if algae is a concern
- Adjust lighting gradually instead of making large changes all at once
- Match lighting to plant type, tank depth, and fertilization routine
- Use a timer schedule through the app for consistent daily lighting
Important Planted Tank Note
Plant growth depends on more than lighting alone. Substrate, fertilizer, CO2, water parameters, plant selection, tank depth, and maintenance routine all affect plant growth and algae control.
For best results, choose plants that match the aquarium’s lighting level and adjust the light schedule based on plant response and algae growth.
Frequently Asked Questions
What size aquarium does the Fluval Plant 4.0 LED 46W fit?
This model fits aquariums from 35–49 inches / 88–126 cm using adjustable mounting brackets.
Is this light for freshwater or saltwater aquariums?
The Fluval Plant 4.0 LED is designed for freshwater planted aquariums. It is not intended as a marine reef light.
Does the Fluval Plant 4.0 require Wi-Fi?
No. The Fluval Plant 4.0 connects through Bluetooth using the FluvalSmart App.
Can I adjust the color channels?
Yes. Individual color channels can be adjusted through the FluvalSmart App.
Can this light grow demanding aquarium plants?
It may support many medium to higher-light plants when configured properly, but plant success also depends on tank depth, nutrients, CO2, substrate, and maintenance.
Can this help reduce algae?
Adjustable lighting can help manage light intensity and schedule, but algae is also affected by nutrients, CO2 balance, water changes, plant mass, and feeding. Lighting alone does not prevent algae.
Is this good for CO2-injected planted tanks?
Yes, it can be used on CO2-injected planted aquariums when the light settings, nutrient dosing, and CO2 levels are balanced for the plants being kept.
Available at Tropical Treasures Wyo
The Fluval Plant 4.0 LED 46W 35–49" is a Bluetooth-controlled freshwater planted aquarium light for aquascapes, community tanks, and planted displays. Visit Tropical Treasures Wyo in Cheyenne, Wyoming, to shop Fluval planted tank lighting, aquarium plants, substrates, fertilizers, CO2 supplies, filters, water conditioners, and aquarium care essentials.
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