Water Control

Tunze 3152 Nano Osmolator


For small aquariums, a stable osmotic balance is important, because they are particularly sensitive to constantly changing salt concentrations. The Osmolator┬« nano which was specifically designed for this, is a water level controller with only a single sensor and is equipped with a processor-based controller that protects against overdosing....Read More »

The New Nano Osmolator


Introducing the little brother to our acclaimed Osmolator, the industry’s most trusted automatic water top-off device. Designed specifically for smaller aquariums, roughly 50 gallons and under, the Osmolator Nano 3152 is a slimmed down version of the full sized 3155. It includes a processor-based anti-overfill system which turns the...Read More »

Tunze's Flood Preventer... guardian angel of nice floors everywhere.


Part of being a happy and care-free aquarist is designing your system to minimize the chance of catastrophe. Aquarium catastrophes come in many different flavors of awful. For example there are livestock catastrophes, like sea apple Pseudocolochirus poisoning events; there are hot and spicy heater malfunctions; and...Read More »

"Auto-top-offs are only for lazy people..."

Roughly thirty years ago Norbert Tunze showed up at Interzoo, the world’s largest pet industry trade show, with a revolutionary new product. This product was one of the Tunze founder’s many inventions; it was also the first product of its kind in the industry. Though he was quite...Read More »

The Nano RO Station is the perfect, simple solution for RO water at home.


One thing nearly all reef hobbyists agree on is that using high-quality source water is the best path to a clean, algae-free aquarium. Tap water, unfortunately, does not fit this bill. Along with varying amounts of dissolved solids, most tap water sources around the country have appreciable amounts of...Read More »

Osmolator sensor

If you own one of our Osmolator Auto Top-off systems then you’re probably already aware of its uncanny accuracy and rock-solid reliability. The Osmolator is generally regarded as the best of the best; it’s the device both professional and hobbyist aquarists turn to when defending against the constant onslaught...Read More »