The Sentia Doser Secondary Unit is an extension pump designed to work alongside the Sentia Primary (base) unit. It cannot operate independently and must be connected to a Primary unit for power and control. Multiple Secondary units can be added to expand your dosing system, allowing you to manage additional supplements from a single platform.

Using the Sentia app via WiFi, both Primary and Secondary dosers can be programmed and monitored directly from your smartphone. The system supports accurate and consistent dosing, helping maintain stable water parameters in marine or freshwater aquariums.

Key Features:

• Extension pump – requires Sentia Primary Unit to operate
• Add multiple Secondary Units to one Primary Unit
• Control all connected units through the Sentia smartphone app
• Powered directly by the Primary Unit (no separate power supply)
• Use included colour rings and hose clips to identify supplements
• Mounting bracket included
• 360° rotating head with 8 locking positions for flexible installation
• Slim profile – single unit measures just 2.625” wide
• Scan compatible Seachem or aquavitro barcodes for automatic dosing calculations based on aquarium volume

Sentia App Features:

• Manage multiple aquariums and devices
• View reservoir levels, scheduled doses and water tests at a glance
• Receive alerts and reminders
• Perform Instant Doses directly from the app at any time

This Secondary Unit expands your Sentia dosing system with precise, app-controlled supplement delivery, offering a scalable solution for maintaining consistent aquarium parameters.

Specifications:

• Type: Secondary extension dosing pump
• Power Source: Primary Unit only (not included)
• Width: 2.625” per unit
• Connectivity: WiFi via Sentia app

Secondary Unit Includes:

• 7 x colour coded rings
• Coloured tubing clips
• Tubing and connectors
• Mounting plate with screws and adhesive strips
• Calibration tube with cap (1 per box)

Aquacadabra acts as credit broker/intermediary and not as a lender.

Klarna's credit products are provided by Klarna Bank AB, which is authorised and regulated by the Swedish Financial Services Authority, with limited supervision by the Financial Conduct Authority. More information can be found here.

Newpay finance options are provided through Deko’s platform by NewDay. P.D. Aquatics Ltd, t/a Aquacadabra is an Introducer Appointed Representative of Pay4Later Ltd, t/a Deko, which is authorised and regulated by the Financial Conduct Authority (ref no 728646) and is a credit broker, not a lender. NewDay Ltd is authorised and regulated by the Financial Conduct Authority (ref no 690292) and is authorised by the Financial Conduct Authority under the Payment Services Regulations 2017 for the provision of payment services (ref no 555318). More information can be found by clicking the newpay option above, or in the Newpay FAQs.

We really want you to be happy with the product that you've received. If however, when the goods arrive they're not what you want, then no problem - we have a 60 day no quibble return guarantee. Just let us know that you're going to return the item(s) by contacting us(stating your Order Number) and complete the returns packing slip that will have been included with your delivery. This will help us to quickly identify the item that you have returned (unopened and unused) - and we'll put a refund through for you.