Aquaforest Kalk Media 5L ** - CLEARANCE

** This item is classed as a large, bulky or a heavy item - additional delivery costs apply. Total delivery will be calculated at checkout.

Aquaforest KalkMedia is granular calcium reactor media for marine aquariums. Used in a compatible calcium reactor, it supplies calcium and carbonates to support calcium levels and alkalinity for corals and other marine organisms. Aquaforest also describes the media as containing essential trace elements.

Pack-size check: This listing is titled 5L, while Aquaforest's current product page and catalogue list a 5kg pack. Litres and kilograms are different measurements and are not interchangeable. Please confirm the supplied pack's label before purchase if pack quantity is important to your reactor fill requirements.

For calcium reactors

The manufacturer specifies 5–12mm granules, selected to promote water flow through the media bed and help reduce clogging. Check that this grain size suits your reactor manufacturer's requirements rather than assuming universal compatibility.

This is calcium-reactor media, not a kalkwasser mixing or direct aquarium-dosing instruction. Use it in the calcium reactor as directed; no direct tank dose is provided here.

How to use

1. Rinse the media in RO water before use.
2. Fill the calcium reactor according to the reactor manufacturer's instructions.
3. Connect the reactor and check that all tubing is correctly installed and secured.
4. Monitor CO₂ and water chemistry to manage dissolution and system stability.
5. Aquaforest recommends maintaining reactor pH between 6.2 and 6.5 for calcium and carbonate release. This is a reactor setting, not a target pH for the aquarium itself.

Although Aquaforest describes KalkMedia as ready to use, its directions still require rinsing before filling the reactor. Determine the fill quantity and operating setup from your reactor's instructions. No fixed tank treatment capacity, replacement interval or guaranteed performance for every reactor is claimed.

At a glance

• Application: Marine aquarium calcium reactors
• Manufacturer-specified grain size: 5–12mm
• Supplies calcium and carbonates, with manufacturer-described trace elements
• Preparation: Rinse in RO water
• Manufacturer's recommended reactor pH: 6.2–6.5

For aquarium use only. Keep out of reach of children.