Fluidized Zeolite Reactor ZA 512 – Deltec

The Fluidized Zeolite Reactor ZA 512 – Deltec is a high-efficiency fluidized bed reactor built for serious marine aquarists who want consistent, ultra-low nutrient levels. Engineered for saltwater aquariums up to 1,000 liters, it provides a powerful yet easy-to-manage method of running zeolite filtration. Using fine-grain zeolite media (1–2 mm), the reactor offers a very large effective surface area for nutrient adsorption, supporting vibrant coral growth and water clarity in even the most demanding reef environments.

Advanced Nutrient Management

Zeolite filtration has long been recognized for its ability to adsorb ammonia and other nitrogenous compounds before they can be converted into nitrates and phosphates. The Deltec - ZA512’s fine-grain media dramatically increases the active surface area compared to standard grades, improving adsorption efficiency and creating a more stable, low-nutrient system. This makes it ideal for SPS-dominated or other nutrient-sensitive reef tanks where pristine water quality is essential.

Automatic Agitation

Unlike conventional reactors that need daily manual stirring to refresh the media, the Fluidized Zeolite Reactor ZA 512 – Deltec features an integrated power-adjustable DC fluidizing pump. By connecting this pump to a timer (not included), aquarists can schedule automatic agitation cycles throughout the day. These gentle pulses dislodge detritus from the zeolite and keep the media from compacting, ensuring it remains fully active. This feature saves time, reduces hands-on maintenance, and keeps performance consistent.

Efficient Fluidization Design

The reactor’s flow pattern has been carefully engineered to deliver uniform fluidization of the zeolite bed. This prevents channeling effects—where water cuts through only part of the media—and stops sediment buildup, both of which are common in older reactor designs. By maintaining even flow, the ZA512 maximizes contact between aquarium water and zeolite, prolonging the media’s effectiveness and keeping nutrient removal steady over time.

Flexible Installation

The  ZA 512 – Deltec can be installed internally or externally in your sump, giving hobbyists maximum flexibility to integrate it into different system layouts. Whether space is tight or abundant, its robust yet compact build allows it to fit neatly in most filtration sections.

Specifications 

• Suitable for Systems: Up to 1,000 liters

• Media Capacity: 3.0 kg of fine-grain zeolite (1–2 mm)

• Required Feed Pump: 500 liters per hour

• Installation: Internal or external of the sump

• Included: Power-adjustable DC fluidizing pump (timer not included)

• Automatic Agitation: Yes, adjustable with external timer

• Fluidization: Uniform, prevents channeling and sediment buildup

• Media Replacement: Every 6–8 weeks (depending on system conditions)

• Performance: Can handle systems up to twice the recommended size depending on nutrient load

Thanks to the efficiency of its media and design, the Fluidized Zeolite Reactor ZA 512 – Deltec can often manage systems larger than its official rating—potentially up to twice the recommended size—if the nutrient load is modest. This performance headroom makes it a future-proof choice for growing reef systems.

Maintenance and Media Replacement

To maintain optimal performance, Deltec recommends replacing the zeolite media every 6–8 weeks, though actual intervals depend on your aquarium’s nutrient load. Combined with the automated agitation feature, upkeep is straightforward and less labor-intensive than with traditional reactors.

Why Choose the  ZA 512 – Deltec

The Deltec ZA512 Zeolite Reactor combines advanced engineering, automated agitation, and flexible installation into one package. It simplifies nutrient control while enhancing performance, making it ideal for reef aquarists who want professional-grade results with minimal manual work. Its fine-grain media and automatic agitation ensure uniform fluidization, reducing maintenance while keeping water crystal clear. Ideal for low-nutrient systems and sensitive SPS-dominated tanks. Whether you run a mixed reef or an SPS-dominated display, the ZA512 provides the reliability and efficiency needed to support a thriving, healthy marine ecosystem.