Description
Quantum AR Phosphate Remover 500ml — Liquid Lanthanum Phosphate Remover for Mid-Size Marine Systems
A 300 L reef sitting at 0.5 ppm phosphate needs a few millilitres of lanthanum a day for a couple of weeks, and then a trickle to hold it. Quantum AR Phosphate Remover 500ml (SKU: QA150500) is sized for that job: a solution of purified lanthanum in deionised water that binds ionic and chemically bound phosphate and precipitates it for mechanical filtration to catch. Quantum rates it for LPS, mixed, SPS, NPS and FOWLR aquariums, and the 500 mL bottle covers the initial reduction and months of maintenance on a mid-sized system.
Dosing follows the reading, from 0.1 to 1.0 mL per 100 L a day at 0.03 to 0.25 ppm phosphate through to 10 mL per 100 L above 10 ppm; the full table is in the details below. It is added directly into high water flow and can be run on a dosing pump, which makes the daily routine easy to automate. Quantum gives one visual warning, a fine white film on the glass that indicates overdosing, and one restriction, no use in aquariums containing live plants. Testing every few days during the reduction phase keeps the dose matched to the level.
Usage & Application
When to Use
- Mid-sized reefs and fish-only tanks: Systems of about 200 to 400 L needing phosphate brought down and held.
- Heavy feeders: Tanks with large fish loads where phosphate creeps up between water changes.
- After a media reactor is retired: Keepers moving from granular media to liquid dosing.
- Coral and fish systems: LPS, mixed, SPS, NPS and FOWLR aquariums that keep no live plants.
Dosing & Administration Guide
- Read the phosphate level: Choose the matching row and start low within it.
- Into strong flow: Dose by hand into circulation or through a dosing pump.
- Glass as the gauge: A white film means the dose is too high for the current level.
- Retest and adjust: Drop to a lower row as phosphate falls; never use in a planted aquarium.
Product Specifications & Highlights
Key Features
- Purified lanthanum solution: Removes ionic and chemically bound phosphate by precipitation.
- Reading-based table: Five phosphate ranges with daily mL per 100 L, so the dose always matches the test result.
- Dosing-pump ready: Suitable for automation on a mid-sized system, with the daily amount adjusted as tests come in.
- Self-indicating: White film on the glass flags an overdose before it becomes a problem.
- Wide use: LPS, mixed, SPS, NPS and FOWLR tanks, with live plants the only exclusion.
Product Details
- Brand: Quantum (Reef Essential range)
- SKU: QA150500
- Barcode (GTIN/UPC): 680569650535
- Product Type: Additives & Supplements > Phosphate Remover
- Net Volume: 500 mL
- Contents: Deionised water, purified lanthanum
- Dose Rate: 0.1–1.0, 0.5–2.5, 1.0–5.0, 5.0–10.0 or 10.0 mL per 100 L daily for phosphate of 0.03–0.25, 0.25–1.0, 1.0–5.0, 5.0–10.0 or 10+ ppm
- Application: Directly into high water flow
- Dosing Pump: Suitable
- Caution: White film on glass indicates overdosing; not for aquariums with live plants
- Target Environment: LPS, mixed, SPS, NPS and FOWLR aquariums


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