Tunze is the German pump and aquarium technology brand best known for Turbelle propeller pumps, the Osmolator auto top-off system, the Comline series of in-tank skimmers and refugiums, and DOC skimmers. Tunze products are the long-life choice - 10+ year service life on Turbelle pumps with bushing replacements.

Known for

Turbelle nanostream pumps

Compact propeller pumps for nano and mid-size reefs. The 6045/6055/6095/6105 are the standard for chaotic flow on 30-150 gallon reefs.

Osmolator 3155

The reef hobby ATO benchmark. Optical primary sensor + float switch secondary + programmable runtime cutoff. Has been the gold standard for 15+ years.

Comline DOC skimmers

In-tank protein skimmers for nano reefs without sumps. Compact design with strong skimming performance per watt.

Pros and cons

Pros
  • 10+ year service life with proper maintenance
  • Bushings and impellers are user-replaceable parts
  • Strong reliability reputation in the reef community
Cons
  • Aesthetics are dated (gray plastic vs sleek black competitors)
  • No app control on most legacy products

Common competitors

EcoTech Vortech · Maxspect Gyre · AutoAqua (ATO)