Overview
The Two Little Fishies Kalkwasser Reactor KW300 automates limewater dosing for reef aquariums using an efficient up-flow design. By pushing top-off water upward through the calcium hydroxide, it mixes a supersaturated kalkwasser solution that supplies steady calcium and alkalinity while helping stabilize pH. The durable acrylic body fits neatly into most sump or external setups.
Key Features
- Up-flow design for efficient kalkwasser use
- Mixes top-off water into a supersaturated solution
- Supplies steady calcium and alkalinity
- Helps stabilize pH in reef systems
- Durable acrylic construction
- Fits most sump or external installations
Specifications
| Spec | Detail |
|---|---|
| Weight | 2.2 lbs |
| Brand | Two Little Fishies |
| UPC | 748172423004 |
About Two Little Fishies
Two Little Fishies builds reactors, supplements, and reef equipment trusted by marine aquarists. Visit Two Little Fishies.
Frequently Asked Questions
How does the up-flow design help?
It moves top-off water up through the calcium hydroxide, mixing a supersaturated solution automatically and efficiently.
Where does it install?
The compact acrylic body fits most sump or external setups.



























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