✨ Christmas Special: Get 35% OFF your first order. ✨

Your Shopping Bag

Your bag is empty

Subtotal $0.00
Shipping Calculated at checkout
Continue Shopping

Transform Osmolator 3 Auto Top Off Your 75% Coupon Inside [afVcstlg]

$45.99 $147.99 -69%

The Tunze Osmolator 3 is an advanced automatic top-off (ATO) system designed to maintain stable water levels in aquariums by replenishing evaporated water. Known for its precision and reliability, it utilizes an optical sensor for accurate water leve

Secure Shopping

100% Safe Guarantee

Free Shipping

On orders over $30

Money-Back

30-Day Guarantee

Transform Osmolator 3 Auto Top Off Your 75% Coupon Inside [afVcstlg]

The Tunze Osmolator 3 is an advanced automatic top-off (ATO) system designed to maintain stable water levels in aquariums by replenishing evaporated water. Known for its precision and reliability, it utilizes an optical sensor for accurate water level detection and a backup float switch for added safety. The system includes a high-quality metering pump and an integrated controller that prevents overfilling. The Osmolator 3 helps maintain consistent salinity in marine tanks, reducing stress on aquatic life. With easy installation and a compact design, it is a popular choice among aquarium hobbyists seeking a dependable ATO solution.


  • Maintains a Stable Salinity Level
  • Plug & Play Convenience
  • Compact All-In-One Design
  • Built-In Safety Features


Advanced Optical Sensor

The large, precise optical sensor detects the water level with an accuracy of 0.5 mm, resists air bubbles, deposits and scratches. The independent thermal safety sensor stops the Turbelle® High Jet 5030 pump in the event of overfilling, ensuring 100% overflow protection.


Plug & Play

All required components are ready for installation in the package (except reservoir). No software setup required. The fixed parameters are based on many years of experience.


5 Year Warranty

"Built to last" according to our highest standards. Our exclusive service is automatically included. Without registration and without hidden hurdles. And of course always accommodating instead of petty-minded.


Specifications

Max. Glass Thickness (Sensor): 15mm (0.59")

Max. Glass Thickness (Tube Holder): 22mm (0.87")

Max. Delivery Height: 6.2m (20.34')

Tubing Diameter: 6mm OD | 3.9mm ID

Tubing Length: 3m (9.84')


What's Included?

1x Osmolator 3 Sensor

1x Magnet Holder

1x Turbelle High Jet Pump

1x 12V DC Power Supply

1x Tube and Tube Holder

What Our Customers Say

January 23, 2026

Absolutely no complaints!

A purchase that was money very, very wisely spent.

- Sian D..

January 23, 2026

Absolutely no complaints!

This is a very good product and its entire whole purchase.

- Lowri D..

January 23, 2026

Absolutely no complaints!

The build quality is simply magnificent.

- Quillan Q..

Write a Review

You Might Also Like

Discover more great products from our collection.

Custom text: Hello

Custom text: Hello

(640)
$39.99 $127.99 -69%
OZ Quick Adjust Beam Trolley

OZ Quick Adjust Beam Trolley

(108)
$36.99 $118.99 -69%
A212SS-O24-A

A212SS-O24-A

(321)
$17.99 $57.99 -69%
Tank Lid Kohler Archer 1046467

Tank Lid Kohler Archer 1046467

(229)
$33.99 $108.99 -69%

Copyright 2026 © mappa-mercia.org

VISA
PayPal
Stripe
Mastercard
CASH ON DELIVERY