LED Eco Chic Refugium 8831 — Submersible Lighting IP68 Chaetomorpha 9W - Tunze

The Tunze LED Eco Chic Refugium 8831 is a submersible LED light designed to stimulate macroalgae growth in marine refugiums and plant growth in freshwater aquariums. Its light spectrum was developed by Tunze to promote the cultivation of Chaetomorpha, a macroalgae that naturally absorbs nitrates and phosphates from the water, offering a biological alternative to resins and chemical products.

Main advantages

• LED spectrum optimized for macroalgae (Chaetomorpha) and aquatic plant growth
• IP68 certified: operates continuously in air or submerged underwater
• Flexible magnetic mount included for glass or acrylic up to 10 mm (3/8")
• Consumption of only 9 W with safe low-voltage power supply
• Integrated thermal protection: power is gradually reduced from 9 W to 7 W starting from 25 °C (77 °F)
• Completely silent operation, fanless

Use in reef aquariums

In saltwater, Chaetomorpha is an economical and natural solution to reduce nitrates and phosphates in the system. Simply harvest a handful of algae periodically to maintain the biological balance of the aquarium. The Tunze 8831 produces a spectrum specifically calibrated to accelerate this growth in any refugium or sump compartment.

Submersible lighting eliminates reflections on the water surface, making the light source more efficient. An immersion of 1 to 2 cm (0.4" to 0.8") is sufficient. Underwater operation also helps to relieve aquarium heating thanks to the heat emitted by the LED.

Installation and control

The magnetic holder allows the lamp to be fixed in the center of the fixture or at the end of the cable, in any orientation. Compatible with glass or acrylic walls up to 10 mm thick. The 1.5 m (59") cable offers the necessary flexibility to place the power supply in a dry location. Control is simply done via a timer connected to the power source.

Technical specifications

• Model: 8831.000
• Consumption: 9 W (reduced to 7 W via thermal protection at 25 °C)
• PAR (Photosynthetically Active Radiation) flux: 2.22 W
• Photosynthetic photon flux: 10.1 µmol/s
• Recommended coverage: 14" x 8" (35 x 20 cm)
• Protection: IP68 — permanently submersible
• Power supply: 100-240V / 50-60Hz, low safety voltage
• Magnet: glass or acrylic up to 10 mm (3/8")
• Dimensions (without stand): 305 x 25 x 13 mm (12" x 1" x 0.7")
• Cable length: 1.5 m (59")
• Integrated non-replaceable LEDs
• Aluminum heat sink

Why choose this product at ReefSolution

ReefSolution is an authorized Tunze retailer in Canada. The LED Eco Chic Refugium 8831 combines perfectly with other equipment for an efficient refugium:

• Tunze Macro Algae Reactor 3181 — Macroalgae reactor for compact biological filtration
• Tunze Osmolator 3155 — Auto top-off system to maintain a stable water level in the sump
• Tunze Care Magnet — Magnetic cleaner for aquarium glass maintenance

Frequently Asked Questions

Can the Tunze LED Eco Chic Refugium 8831 remain submerged permanently?

Yes, the lamp is IP68 certified and designed to operate continuously underwater. An immersion of 1 to 2 cm is sufficient to eliminate surface reflections and maximize light efficiency.

What is the best LED light for growing Chaetomorpha in a refugium?

The Tunze 8831 is specifically designed for the growth of macroalgae like Chaetomorpha. Its light spectrum and photon flux of 10.1 µmol/s are calibrated to maximize photosynthesis in a refugium or sump compartment.

How to control the lighting cycle of the Tunze 8831?

The lamp is controlled via a timer connected to the electrical power supply. Simply program an inverse cycle to the main aquarium lighting to stabilize the pH overnight.