Description
Quantum Aqua Guard 100g — Scoop-Dosed Powder Water Conditioner for Freshwater and Saltwater Aquariums
Some conditioners are dosed every day; this one is dosed every three months, and kept for the weeks when something goes wrong. Quantum Aqua Guard 100g (SKU: QA520100) is a powdered water conditioner suitable for both freshwater and saltwater aquariums, formulated to promote a balanced, healthy environment by neutralising toxins, supporting the aquarium’s inhabitants and improving water clarity. Quantum lists the contents as oxidising salts, supplies a scoop in the pack, and gives two dosing schedules: a light general-use routine and a heavier emergency routine for a tank in trouble.
For general use the dose is one scoop per 200 L every three months, added in the morning. In an emergency the dose rises to two scoops per 200 L per day, one in the morning and one in the evening, for ten to twenty days. Quantum’s dosing volume is the total of the aquarium and external filter less the media, rock and ornaments that occupy space, and the powder is added directly into high water flow. Because a 100 g tub is dozens of general-use doses, a home keeper will hold it for a long time before the emergency schedule is ever needed.
Usage & Application
When to Use
- Quarterly conditioning: A single scoop per 200 L every three months as a maintenance measure.
- Water quality emergencies: Cloudy water or toxin concerns after a die-off, an overfeed or a filter failure.
- Freshwater and marine tanks: One conditioner that serves both systems, so a keeper with mixed tanks needs a single tub.
- Clarity problems: Tanks that will not clear after a substrate stir, a rescape or a bacterial bloom.
Dosing & Administration Guide
- Work out the volume: Aquarium plus external filter, minus rock, media and ornaments.
- General use: One scoop per 200 L every three months, in the morning, into high water flow.
- Emergency use: Two scoops per 200 L per day, morning and evening, for ten to twenty days.
- Return to routine: Once the water clears and the tank settles, go back to the quarterly maintenance dose and keep the tub for next time.
Product Specifications & Highlights
Key Features
- Freshwater and saltwater: One powdered conditioner rated by Quantum for both types of aquarium.
- Neutralises toxins: Formulated to support inhabitants and improve clarity.
- Two schedules: Quarterly maintenance and a ten-to-twenty-day emergency course.
- Scoop included: Repeatable dosing straight from the tub without weighing.
- Long shelf life in use: A 100 g tub covers years of quarterly dosing on a home tank.
Product Details
- Brand: Quantum
- SKU: QA520100
- Barcode (GTIN/UPC): 0735204321568
- Product Type: Additives & Supplements > Water Conditioner (Powder)
- Net Weight: 100 g
- Contents: Oxidising salts
- Dose Rate: General use 1 scoop per 200 L every 3 months (morning); emergency 2 scoops per 200 L per day (morning and evening) for 10–20 days
- Dosing Volume: Aquarium and external filter volume minus media, rock and ornaments
- Application: Add directly into high water flow
- Included: Measuring scoop
- Target Environment: Freshwater and saltwater aquariums


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