Description
Quantum Water Primer 250mL — Super Concentrated Dechlorinator and Detoxifier for Home Aquariums
For most home aquariums the weekly job is the same: a bucket or two of tap water made safe before it goes in. Quantum Water Primer 250mL (SKU: QA010250) handles it at 1 mL per 60 L, so a 250 mL bottle covers roughly 15,000 L of new water, a year or more of changes on a 200 L community tank. It strips chlorine and chloramine and also detoxifies ammonia, nitrite and nitrate and binds heavy metals, which means the same bottle is the first thing to reach for when a test kit shows ammonia after a fish death.
Quantum’s formula is deionised water carrying a blend of removing and detoxifying salts, and it is deliberately simple to use. There is no shaking; the measured amount goes into a high-flow part of the tank or into the change bucket while it mixes. The cap on this size holds about 10 mL, and the label gives two rates: the everyday water-change dose and a five-times emergency dose for spikes caused by a death, a pH swing or another major parameter shift. It suits freshwater, saltwater and planted aquariums, and Quantum notes that it cannot be run through a dosing pump.
Usage & Application
When to Use
- Weekly water changes: Conditions new tap water for community, cichlid and planted tanks up to a few hundred litres.
- Marine top-ups and changes: Works in saltwater as well as fresh, so one bottle covers a reef and a freshwater tank.
- Ammonia after a loss: The emergency dose detoxifies ammonia and nitrite while the filter catches up.
- Chloramine areas: A double dose handles heavily treated town water without a second product.
Dosing & Administration Guide
- Water-change dose: 1 mL per 60 L of new water, or 5 mL per 300 L (1 capful is roughly 10 mL).
- Emergency dose: 5 mL per 60 L, or 25 mL per 300 L, when ammonia or nitrite appears.
- High chlorine or chloramine: Double the water-change dose if the supply is heavily treated.
- Adding it: No shaking; pour into high flow, working from tank plus filter volume minus rock, media and ornaments. Not suitable for dosing pumps.
Product Specifications & Highlights
Key Features
- Removes and detoxifies: Chlorine, chloramine, ammonia, nitrite, nitrate and heavy metals in one dose.
- Highly concentrated: 250 mL treats about 15,000 L of change water.
- Emergency rate on the label: A clear five-times dose for spikes, not guesswork.
- Fresh, salt and planted: Rated for all three by Quantum.
- Capful dosing: A 10 mL cap makes measuring quick on tanks of 100 L and up, with drops still possible for smaller ones.
Product Details
- Brand: Quantum
- SKU: QA010250
- Barcode (GTIN/UPC): 0706502800963
- Product Type: Additives & Supplements > Water Conditioners
- Net Volume: 250 mL
- Dose Rate: 1 mL per 60 L for water changes; 5 mL per 60 L in an emergency
- Treatment Capacity: Approximately 15,000 L at the water-change dose
- Target Environment: Freshwater, saltwater and planted aquariums


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