£137.90

ARKA Silicate remover aquarium – ARKA Sili-Out 2 20 L – eliminates silicate, phosphate & yellowing compounds – stabilises water parameters without pH drop – for marine & freshwater tanks – with filter bag

Multicolored, SIO220

Price data last checked 58 day(s) ago - refreshing...

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About as cheap as it gets. The only time it was cheaper was 3 months ago.

£138 today · all-time low £136 (Mar 2026) · usually the usual

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Price History & Forecast

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Last 33 days • 33 data points (No recent data available)

Historical
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£138.86 £135.19 £135.99 £136.79 £137.59 £138.39 £139.19 31 March 2026 08 April 2026 16 April 2026 24 April 2026 02 May 2026

Price Distribution

Price distribution over 33 days • 4 price levels

Days at Price
Current Price
8 days 9 days 1 day · current 15 days 0 4 8 11 15 £136 £137 £138 £139 Days at Price

Price Analysis

Most common price: £139 (15 days, 45.5%)

Price range: £136 - £139

Price levels: 4 different prices over 33 days

Description

Sili-Out 2 quickly, safely and permanently removes silicate, phosphate, barium, arsenic, chromium and yellow substances from the water and sustainably improves the water quality. Sili-Out 2 enables a targeted reduction of the above-mentioned pollutants in a form that is harmless to your animals, without affecting the pH value. Sili-Out 2 improves the natural growth of corals and plants with pollutant problems within a very short time. The growth of unwanted diatoms is permanently prevented. Sili-Out 2 is an aluminium-based product with a purity level of 99 + %. Directions Start with 50ml per 100L of water (up to 100ml for heavy loads). Replace once silicate or phosphate levels rise again. Use the included fine mesh filter bag in canisters, sumps, reactors.

Key Features

Powerful silicate & phosphate control – high-purity aluminium oxide adsorbs problem substances within hours – combats diatoms & yellow tinge – ideal for marine, freshwater & nano tanks – no pH fluctuations.

Broad-spectrum contaminant removal – binds silicate, phosphate, arsenic, barium, chromium & more – protects from nutrient overload – perfect for reef, planted or high-load fish-only systems.

Safe & aquarium-friendly – 99% pure aluminium granules in fish-safe formulation – no pH impact, no metal leaching – suitable for delicate corals, shrimp, discus & breeding tanks.

Easy dosage & use – start with 50 ml per 100 l water (up to 100 ml for heavy loads) – replace once silicate or phosphate rises again – includes fine mesh filter bag – works in canisters, sumps & reactors.

Trusted ARKA quality – refined grain, low-dust & consistently effective – proven by breeders & reefkeepers – ideal in combination with myAQUA RO systems & Resin-Pure post-filters for top-tier water quality.

Product Specifications

Brand
ARKA
Model
SIO220
Colour
Multicolored
Size
13700g
Domain
Amazon UK
Listed Since
05 January 2023

Barcode

No barcode data available

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