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Tunze Osmolator Storage Container 27L (7.1 Gal) ATO Reservoir


Item #: TZ4117

In Stock

Tunze Storage Container 27L (7.1 Gal) ATO Reservoir (5002.250)


  • Container with a capacity of 27 L (7.1 gallons)
  • Large cover opening to facilitate topping up and cleaning
  • Size for an open 600 liter tank: fill lasts for approx. one week ø 34 x 43.5 cm
  • For use with Tunze Osmolator / Osmomat and Calcium Dispenser.

Manufacturer information

For forty-five years the name TUNZE® has been synonymous with aquariums. Many products and components which we have developed in the course of time are now standard features of aquarium technology today. This confidence in TUNZE is no coincidence. The company has remained true to its philosophy right from the beginning, researching water biotopes all over the world to develop components which enable natural water conditions in the closed environment of an aquarium. In the implementation of know-how, effectiveness and efficiency, TUNZE® takes the lead in environmental compatibility. Their motto is: quality and reliability. These values are upheld with well thought-out and precise tool making by highly qualified experts. The brand names of TUNZE® and Turbelle® meet the expectations of the seal of quality; Made in Germany. Many of the products shown in this catalogue are protected by national and international patents.

5 Stars


Reviewed on
December 07, 2019

Yes, I would recommend this.

Big bucket

Pros: Large volume

Cons: Have to open to see remaining volume

I like that the bucket is a little large and provides another day or two of top off water. It would be nice to have a clear window for viewing how full it is, but is nice for the price.

Was this review helpful? 0 0

steven irwin

Reviewed on
January 31, 2016

Yes, I would recommend this.

It works!

Would be better if it was a clear bucket or semi transparent, but just need to check it every so often, so no big deal because it is a perfect size when depleted to less than 2 gallons, to refill with a full 5 gallons of RO and kalkwasser premixed and shaken in my capped transportable containers.

Was this review helpful? 2 0

joseph bonanno

Reviewed on
December 11, 2015

Yes, I would recommend this.

tunze container

convenient, easy,to set up and clean. using with tunze osmoregulator. should have done earlier.

Was this review helpful? 3 0

pierson washer

Reviewed on
May 21, 2008

Yes, I would recommend this.


great quality works great with my rsm

Was this review helpful? 24 0

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