Aquarium Supplies ships free over $49 - Learn More

Split-Pay & Financing - 0% APR Interest* - More Info

Earn Rewards Points for every $1 spent - Learn More

CRTT3000 - Twin-Tech Calcium Reactors - Deltec

Deltec  |  SKU: 87402000_DSP


(This product is dropshipped from Deltec)

Fully automated calcium reactor

CO2 saturation and degassing technology
Achieves stable KH while regulating CO2 gas
Easily adjustable controller
Audible CO2 alarm


CRTT1500 UP TO 400 GALLONS 12.5" x 7" x 23.5" 4 Liter / 5.5kg
CRTT3000 UP TO 800 GALLONS 15.5" x 9.5" x 23.5" 10 Liter / 13.5kg
CRTT10000 UP TO 2600 GALLONS 17.5" x 12 x 36.5" 30 Liter / 40kg


This latest generation reactor operates on the principle of total CO2 saturation by the continuous recirculating of the water in the reactor through a large bubble of gas. The CO2 dissolves in the water until it is fully saturated, which occurs at a very low pH, at which point no further gas can be dissolved until additional water is added to the reactor. The whole process is controlled automatically by the digital controller and float switch in the gas chamber. As the CO2 bubble dissolves in the water, the water level rises, which raises the float switch and triggers the solenoid valve to add more gas to replenish the bubble.

The innovative Twin-Tech reactor has several unique features providing simplicity of control but also relating to the way that the system feeds the reactor with water from the aquarium.

The smart controller on the Twin-Tech uses a built-in flow meter to accurately measure the volume of water passing into the reactor and uses that information to control the feed pump. This feature allows the user to know exactly how much reactor effluent, in liters, is being added to the aquarium within each 24-hour period, which is shown on a large LCD display in the center of the controller.

The water flow can be adjusted between 3 and 350 liters per day, simply by pressing two up and down buttons on the panel.

• Controller with separate power supply unit.
• Recirculation pump and connections.
• Feed pump with suction filter.
• Low voltage solenoid valve.
• Hoses and non-return valves to connect the unit.

Not included
• CO2 bottle

• CO2 Dual Stage Regulator (required)
• CO2 hose.
• Calcium reactor media.

Deltec' s Twin-Tech Calcium Reactors have been voted as one of Reef Builders TOP 10 Products of 2018. Read their review here!

FREE Ground over $49 & Overnight over $399*

We offer competitive rates on aquarium supplies.

Reefer Rewards Points earned

Reedem points for discounts on Livestock and Supplies.

Split-Pay & Financing Options

We offer split-pay & financing with Affirm, Shop Pay, & PayPal