Description
Quantum Aqua Pro KH 275g — Powdered KH Buffer with Scoop for Freshwater pH Stability
Carbonate hardness is the parameter that keeps every other one still, and powder is the cheapest way to add it. Quantum Aqua Pro KH 275g (SKU: QA430275) is the smallest pack of Quantum’s Freshwater Essential Plant Essential Aqua Pro KH, a blend of KH buffer salts formulated to raise carbonate hardness gently and improve pH stability in any freshwater aquarium. Without KH regulation a tank’s pH swings, and swings reduce the efficiency of the biochemical processes its inhabitants rely on. A level scoop is included, and Quantum publishes a KH target for every kind of freshwater tank.
Five grams, one level scoop, per 100 L raises KH by about 1.4 dKH. The powder is never added straight to the aquarium: it is dissolved in a portion of tank water in a separate vessel, then poured in where the flow is strongest. At a water change only the replacement volume is dosed, and the product is not used for evaporation top-ups. Targets range from 0.5 to 2 dKH for South American tanks, through 1 to 3 for community and high-tech planted, 2 to 6 for shrimp, up to 7 to 12 for Tanganyika. The 275 g pack holds about 55 scoops.
Usage & Application
When to Use
- Small and mid-sized tanks: Community, shrimp and planted aquariums up to a few hundred litres.
- pH that drifts overnight: Tanks whose KH has fallen to zero and lost its buffer.
- RO and rainwater users: Rebuilding carbonate hardness in water that has none.
- Trying the powder: A first pack for a keeper moving from liquid buffers.
Dosing & Administration Guide
- Choose the KH: From Quantum’s table, for example 1 to 3 dKH for community tanks or 2 to 6 for shrimp.
- One scoop per 100 L per 1.4 dKH: 5 g per scoop, scaled to the water being treated.
- Dissolve first: Stir the powder into a jug of aquarium water, then add into high flow; never put powder straight in.
- Change water only: Dose the replacement volume, not evaporation top-ups; pair with Aqua Pro GH.
Product Specifications & Highlights
Key Features
- Powdered KH buffer salts: Concentrated carbonate hardness with a scoop included.
- 5 g raises 100 L by 1.4 dKH: Easy to scale by the scoop.
- Published KH targets: A range for every freshwater tank type.
- pH stability: Holds pH steady so fish and plant biochemistry runs efficiently.
- Aqua Pro set: Companion to Aqua Pro GH, pH Up and pH Down.
Product Details
- Brand: Quantum (Freshwater Essential Plant Essential range)
- SKU: QA430275
- Barcode (GTIN/UPC): 0769807350526
- Product Type: Additives & Supplements > Freshwater KH Buffer (Powder)
- Net Weight: 275 g (about 55 level scoops)
- Contents: KH buffer salts
- Dose Rate: 5 g (1 level scoop) per 100 L raises KH by about 1.4 dKH; dissolve in aquarium water first; dose change water only
- Target Ranges: South American 0.5–2; community and high-tech planted 1–3; goldfish 2–4; shrimp 2–6; American/Australian and low-tech planted 3–6; Malawi and Victoria 4–8; Tanganyika 7–12 dKH
- Included: Measuring scoop
- Target Environment: Planted, fish-only, shrimp and pond freshwater aquariums


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