Lime Water Reactor KWR 70: 350-900 litres aquaria

A suspension (mixture) of water and powdery calcium hydroxide is kept in suspension in the reactor by means of a robust circulation pump. Above this white lime milk is the clear lime water. The incoming reverse osmosis water (or very soft water) reacts immediately in the KWR with the calcium hydroxide to lime water, which runs back into the aquarium or filter tank.

The aquarium water is enriched with calcium ions. Due to the very high pH value of lime water (pH12-13), the pH value of the aquarium is also slightly increased. At the point where the lime water drips into the aquarium water, precipitates (hydroxyapatite) are formed which carry phosphate with them. This reduces the phosphate concentration in the aquarium (phosphate precipitation).
The carbonate hardness is generally not increased. 

• Reactor with rigid circulation pump
• Special screen for generating the suspension
• 4 mm valve as adjustment aid
• Mounting and operation manual
• 1 filling calcium hydroxide powder, "purest" quality

Maximum aquarium size: ___ litres (depending on the daily evaporation rate; oversizing the KWR prolongs the maintenance-free time) select the required size
Operation: external, in filter sump, hang on, hang in or wall mounted
Diameter: 70 mm
Volume: __ litres select the required size
Maximum continuous inlet volume flow: __ l/h select the required size
Footprint: 160 x 160 mm
Reactor height: __ cm select the required size
Materials: PMMA, PA, NBR, Silicone, PVC, ABS
Weight:__ kg select the required size
Built-in circulation pump: Eheim 1046
Electrical connection: 5 W, 230 V 50 Hz (others on request)
Supply water connection: 1/4" - 4 mm nozzle
Connection drain: 1/4" - 10 mm nozzle
Drain connection: one G1/4" connections is available
maximum calcium hydroxide filling: __ g  select the required size
Quantity of lime water per calcium hydroxide filling at 25°C:  select the required size
pH value of the outlet water: 12 to 13
Calcium concentration outlet water: 720 mg/l (15°C), 690 mg/l (20°C), 670 mg/l (25°C)
WEEE Reg. No.: DE80560390

Instruction manual

Leaflet

Safety data sheet "Calcium Hydroxide"

Dosing "Kalkwasser"

Methods for rising KH and Calcium

Sodium hydrogen carbonate in the KWR

FAQ: Calcium hydroxide reactor - "kalkwasser" reactor

Lower screen and suspension screen  select the desired model size

Spare lid

O-ring for main flange 115 x 5,3

Wing screw M6x20

Drain valve

Silicone suction feed

Spare ball valve

PA angle fitting 1/4"a-10a (outlet connection)

PA angle fitting 1/4"a-4a (vent connection)

PA screw-in fitting 1/4"a-4a (connection pressure side of pump)

PA screw-in fitting 1/8"a-4a (connection underside lid, water inlet)

Pumpenersatzteile:

Spare pump impeller (do not use the impeller with carbon bearing!)

Calcium Hydroxide solution („Kalkwasser“) is a strong alkaline substance. Children should never reach the powder nor the solution. At contact with eyes or skin flush with much water and go to the doctor (take the label of the Calcium Hydroxide with you).

Safety data sheet "Calcium Hydroxide"

 This filter does not belong in the hands of small children - danger of swallowing small parts!