Description
Quantum African Lake pH Buffer | KH Conditioner 500ml — KH and pH Buffer for African Cichlid Aquariums
A 300 L Malawi tank on a weekly change routine gets through buffer steadily, and the 500 mL bottle is where most keepers settle. Quantum African Lake pH Buffer | KH Conditioner 500ml (SKU: QA300500) is the African Lake Buffer Pro from Quantum’s freshwater range, a solution of safe KH and pH salts in deionised water that raises carbonate hardness to the level the keeper chooses while regulating pH to match the rift lakes. Without KH and pH held steady, pH swings between water changes and the biochemical processes the fish depend on lose efficiency, which is why Quantum pairs this bottle with its African Lake Pro Salt GH.
Ten millilitres per 100 L raises KH by 1 dKH. The targets depend on the lake: Malawi and Victoria fish are kept at 4 to 8 dKH and pH 7.8 to 8.5, Tanganyika fish at 7 to 12 dKH and pH 8.5 to 9.2. When water is changed, only the replacement volume is dosed. Conditioning 75 L of RO water to 6 dKH for a 300 L tank takes 45 mL, so a 500 mL bottle lasts about eleven weekly changes, and a Tanganyika tank at 10 dKH uses it roughly half as long.
Usage & Application
When to Use
- Mid-sized rift lake tanks: Malawi, Victoria and Tanganyika aquariums of 200 to 400 L.
- Weekly conditioning: Bringing change water to the tank’s KH and pH before it is added.
- Tanganyika keepers: Frontosa, tropheus and shell-dweller tanks that need the higher range.
- pH drifting down: Established tanks where carbonate hardness has been used up over time.
Dosing & Administration Guide
- Set the target by species: Malawi and Victoria at 4 to 8 dKH, Tanganyika at 7 to 12 dKH, with the matching pH bands.
- Calculate: 10 mL per 100 L for each 1 dKH of rise wanted.
- Change-water dosing: Treat the new water only, then carry on with the change as usual.
- Run the triad: Use African Lake Pro Salt GH for general hardness so GH, KH and pH stay in balance.
Product Specifications & Highlights
Key Features
- Buffers KH and pH together: One dose raises carbonate hardness and holds pH.
- Two published target sets: Malawi and Victoria, and Tanganyika, each with KH and pH ranges.
- 10 mL per 100 L per 1 dKH: Easy to scale to any change volume.
- Protects fish biochemistry: Prevents the pH fluctuation that stresses rift lake cichlids.
- System partner: Formulated to work with African Lake Pro Salt GH.
Product Details
- Brand: Quantum (Freshwater Essential range)
- SKU: QA300500
- Barcode (GTIN/UPC): 0706502801014
- Product Type: Additives & Supplements > Freshwater pH & KH Buffer
- Manufacturer Name: African Lake Buffer Pro pH | KH
- Net Volume: 500 mL
- Contents: Deionised water, safe KH and pH salts
- Dose Rate: 10 mL per 100 L raises KH by 1 dKH; during a water change, dose only the volume replaced
- Target Ranges: Malawi and Victoria 4–8 dKH, pH 7.8–8.5; Tanganyika 7–12 dKH, pH 8.5–9.2
- Companion Product: African Lake Pro Salt GH
- Support: Free Quantum Aqua dosing app with instructional videos
- Target Environment: African rift lake cichlid aquariums


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