Fluval Flex 32.5 Saltwater Aquarium Kit

The Fluval Sea Flex 32.5 Saltwater Aquarium Kit is a bold, curved-front all-in-one marine aquarium that pairs a 32.5 US gallon (123 L) tank with reef-capable Marine 3.0 Bluetooth LED lighting and a hidden 3-stage filtration system, giving you a complete saltwater setup in a single box. The honeycomb-print front panel conceals the water line for a clean, modern look, while the Marine 3.0 LED delivers a full color spectrum tuned for corals and marine fish, all controlled from your phone. Browse our saltwater livestock and corals to stock your reef.

Features

• Marine 3.0 Bluetooth LED. A reef-capable full-spectrum fixture controlled from the FluvalSmart app, with customizable color, dynamic effects, and a programmable 24-hour cycle that supports soft and LPS corals as well as vibrant marine fish.
• Powerful 3-stage filtration. Two independent rear media chambers pull water through mechanical (foam), chemical (activated carbon), and biological (BioMax) media for clean, stable reef water.
• Bold curved, honeycomb-print design. The signature curved front glass and honeycomb wrap hide the water line and rear equipment for an unobstructed view of your reef.
• Adjustable dual output nozzles. Twin nozzles let you fine-tune flow to keep detritus in suspension and corals gently swaying.
• Room to grow. Space to add a second Marine 3.0 LED (sold separately), a nano protein skimmer, or a wavemaker as your reef matures.

What's Included

• Glass aquarium with cover
• Marine 3.0 Bluetooth LED lighting system
• Safe, low-voltage transformer
• Circulation pump with output nozzle
• Foam filter blocks
• Activated carbon
• BioMax biological media

Specifications

Recommended Pairings

• Fluval Flex Aquarium Stand — a matching curved cabinet sized for the Flex 32.5.
• Fluval T Series Heater — a stable heater is essential for reef tanks; the Flex has a built-in heater chamber but no heater. A 150 to 200 W model suits this size.
• Marine salt mix — mix up saltwater to the right salinity for your new reef.
• Live corals — start your reef with beginner-friendly soft corals.
• Prefer freshwater? See the Fluval Flex 32.5 Aquarium Kit.

Frequently Asked Questions

Does it include salt, live rock, or saltwater? No. The kit provides the tank, Marine 3.0 lighting, circulation pump, and filtration media. You add marine salt, live rock, and mixed saltwater separately.

Can it grow corals? Yes. The Marine 3.0 LED supports soft and LPS corals; the most demanding SPS corals may want a higher-output fixture.

Does it come with a heater or protein skimmer? No. The rear filter chamber has space for a heater, and a compact nano skimmer can be added as your reef grows.

Do I need a stand? Yes. A filled 32.5 gallon aquarium is very heavy, so a purpose-built stand is strongly recommended. The Fluval Flex cabinet matches the tank's curved profile.