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 - Image 1

£128.25

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

Name: 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
Brand: ARKA
Price: 128.25 GBP
Availability: InStock

Multicolored, SIO220

Water Treatments

About as cheap as it gets. The only time it was cheaper was 2 months ago.

£128 today · all-time low £126 (Jul 2026) · usually the usual

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Most common price: £128 (23 days, 50.0%)

Price range: £126 - £130

Price levels: 4 different prices over 46 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
ASIN: B0BNHVBXHG
Category: Pet Supplies > Fish & Aquatic Pets > Aquarium Accessories > Water Quality Testing & Treatment > Water Treatments
Domain: Amazon UK
Listed Since: 05 January 2023

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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

About as cheap as it gets. The only time it was cheaper was 2 months ago.

Price History & Forecast

Price Distribution

Price Analysis

Description

Key Features

Product Specifications

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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

About as cheap as it gets. The only time it was cheaper was 2 months ago.

Price History & Forecast

Price Distribution

Price Analysis

Description

Key Features

Product Specifications

Barcode

Similar Products You Might Like

ARKA Sili-Out 2 Silicate Remover - 5000 ml Aquarium Granules

Silicate Remover Pond 13.7 kg - Sili-Out 2 Granules against Diatoms

Zeolite Powder Aquarium 11.5 kg - Zeopure Improves Water Quality

ARKA Phos-Out 4 Phosphate Remover - 20L Iron Hydroxide Media

API Tap Water Conditioner for Aquariums - 3.78 Liter Bottle

ARKA Reef Salt 20kg - Organic Active with Coral Booster

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Dupla 81328 Trace Element Mix Liquid, 5 l

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Aquarium substrate cleaner – ARKA Substrate Cleaner 5000 ml – removes sludge & detritus from gravel & substrate – 100% biological with live bacteria – no siphon or hose – for freshwater & marine tanks

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ARKA NOPO Control Nitrate and Phosphate Remover - 5000 ml

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ARKA Premium Reef Salt 20kg - Fast Dissolving Marine Salt

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ARKA Basic P - 5L Phosphate Supplement for Saltwater Aquariums

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Aquarium substrate cleaner – ARKA Substrate Cleaner 5000 ml – removes sludge & detritus from gravel & substrate – 100% biological with live bacteria – no siphon or hose – for freshwater & marine tanks