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Most products on our website are in stock and shipped by us from our retail location.
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Tunze Osmolator 3155 - Auto Top Off System
The Tunze 3155 Osmolator is one of the best ATO systems in the aquarium hobby, and is trusted and used by almost all the best saltwater setups around. Tunze's Osmolator is capable of almost any sized aquarium when topping of your evaporation water is essential and comes with everything needed to setup and use. With high quality parts and strong magnets the Tunze 3155 is an amazing choice for your automatic top off system, and super simple to setup.
Water level regulation with static sensors are included
In 1983 already, TUNZE® Aquarientechnik introduced one of the first water level regulators to aquarism. Today’s generation of Osmolator contains a static and compact sensor with infrared technology, achieving an osmotic stability in fresh-water and marine aquariums through a precise, regular and safe compensation of the evaporated water. The Osmolator 3155 comprises a controller, two sensors, two magnet holders for sensors and numerous accessories. It is suitable for use in cabinet filter plants, in Comline filters or directly on the edge of the aquarium.
An infra-red operated mini sensor recognises the water level precisely.
A second safety sensor permits a reliable functional control.
The 5017 protects the metering pump against running dry or reports an empty storage tank.
The 5017 displays all functions optically and sounds a signal in case of failures.
The Osmolator is operated on 11 V safety extra-low voltage.
Posted by William Schroeder on Feb 10th 2020
Okay, when you buy this, there's a lot of parts in tiny box and the directions are a bit confusing. Just go to YouTube and search up a video on how to set it up. It's way easier than the directions lead you to believe. Once it's up and running it works like a champ.
Limited Time - FREE SHIPPING ON ALL ORDERS OVER $29! Most orders will ship the same or next business day of when you place the order. We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Almost all items on are website qualify for FLAT RATE or FREE shipping! Order over $29 in products and receive FREE shipping on your order.
International Shipping & OrdersWe ship Worldwide everyday. Please contact us for shipping quotes and availability on any products you would like to purchase.
International orders do NOT qualify for free shipping, please contact us for a shipping quote.
We only accept Paypal as payment for international orders and customers and must ship to a confirmed address.
EVERY ITEM WE SELL IS BRAND NEW & COMES WITH A FULL MANUFACTURE WARRANTY! We do not sell used, defective, or returned product to our customers. Only exception to this is in our clearance and open box section of our website. Even those items still include a full warranty, and are usually an amazing deal if your looking to save money!
Most brands and products we sell have typically a 1 year warranty, with some products having up to 3 or more years. If you have any questions on warranties you can check the manufacture website or just contact us with any questions. At FragtasticReef.com we sell only the best products, and only products we recommend and use ourselves, so you can buy with confidence.