Description
Quantum Tropical / Community pH Pro 5L — Bulk pH Regulator for Ponds, Shops and Fish Rooms
A pond of several thousand litres or a shop’s tropical system uses pH buffer by the cup every week, and the 5 L container is built for that. Quantum Tropical / Community pH Pro 5L (SKU: QA385000) is the bulk size of a solution of safe pH salts in deionised water, formulated to regulate pH and replicate the near-neutral water of tropical lakes. Regulating KH and pH together keeps the pH from fluctuating and protects the biochemical processes fish and shrimp rely on, which is why Quantum pairs this with Tropical/Community KH Pro and Tropical/Community Pro Salt GH and recommends a neutral substrate.
The rate is unchanged from the bottles: 10 mL per 100 L once a week, or as required, to hold pH between 6.5 and 7.5, used as a maintenance supplement, and only the replacement volume dosed at a water change. A 3,000 L pond takes 300 mL a week, so 5 L lasts about sixteen weeks through the season; a fish room with 2,000 L of tropical tanks gets around twenty-five weeks. Tanks tested and found in range simply skip that week, which extends the container further.
Usage & Application
When to Use
- Garden ponds: Outdoor systems in the thousands of litres kept near neutral through the season.
- Retail tropical systems: Shop tanks holding community fish and shrimp between 6.5 and 7.5.
- Breeders and fish rooms: Many tropical tanks dosed weekly from one container at the bench.
- Central water treatment: Dosing a reservoir that supplies several community aquariums.
Dosing & Administration Guide
- Per system, per week: 10 mL per 100 L, or as required, to hold each one at pH 6.5 to 7.5.
- Test each system: Dose only the tanks or ponds that have drifted; skip the ones in range.
- Change water only: At a change, treat the replacement volume rather than the whole system.
- Run the full set: Tropical/Community KH Pro and Pro Salt GH in the same routine.
Product Specifications & Highlights
Key Features
- Bulk pH regulation: 5 L of safe pH salts for ponds and multi-tank systems.
- Same weekly rate: 10 mL per 100 L, identical to the 250 mL, 500 mL and 1 L bottles.
- Holds 6.5 to 7.5: The tropical band Quantum recommends for community, shrimp and pond water.
- Pond and fish-room economy: A season of weekly dosing from one container.
- Three-part system: Designed alongside Tropical/Community KH Pro and Pro Salt GH.
Product Details
- Brand: Quantum (Freshwater Essential range)
- SKU: QA385000
- Barcode (GTIN/UPC): 680569650559
- Product Type: Additives & Supplements > Freshwater pH Buffer
- Net Volume: 5 L
- Contents: Deionised water, safe pH salts
- Dose Rate: 10 mL per 100 L once a week or as required; during a water change, dose only the volume replaced
- Target Range: pH 6.5–7.5
- Companion Products: Tropical/Community KH Pro; Tropical/Community Pro Salt GH
- Support: Free Quantum Aqua dosing app with instructional videos
- Target Environment: Pond, shrimp and tropical community aquariums


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