Outdoor, sport and everyday productsShop smarter, all in one place.
UK edition · GBP

Tetra CrystalWater Aquarium Water Clarifier, 250 ml

£12.68 (as of 23/10/2026 22:49 BST - DetailsProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product.)

Tetra CrystalWater is a 250 ml aquarium water clarifier designed to help eliminate clouding and support clearer water by binding small particles for filter removal. Initial effects are stated after 2 to 3 hours, with clearer water within 6 to 12 hours. It is not suitable for aquariums containing invertebrates such as snails, shrimps and other crustaceans.

You might also need

Magnetic Aquarium Glass Cleaner for Fish Tanks Under 50 Gallon£8.95 (as of 18/07/2026 12:53 BST - DetailsProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product.)View on Amazon
FEDOUR 300LPH Aquarium Air Pump with Dual Output, 3W Adjustable Original price was: £18.77.Current price is: £16.97. (as of 23/10/2026 22:41 BST - DetailsProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product.)View on Amazon
SKU: B005P7ESII Category:

As an Amazon Associate we earn from qualifying purchases.

Compare with similar Aquarium Water Treatments and Test Kits

Watersafe Coliform Bacteria Water Test Kit£12.99 (as of 23/10/2026 22:54 BST - DetailsProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product.)View on Amazon
Price drop −12%Salifert Dissolved Oxygen Test Kit for Marine, Fresh and Pond Water Original price was: £13.85.Current price is: £12.08. (as of 06/11/2026 19:58 GMT - DetailsProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product.)View on Amazon

As an Amazon Associate we earn from qualifying purchases.

Quick Summary

Tetra CrystalWater is an aquarium water clarifier in a 250 ml bottle. It is described as helping to eliminate clouding and make aquarium water crystal clear. The active ingredients bind small particles in the water so they can be extracted by the aquarium filter.

Initial effects are stated to be visible after 2 to 3 hours, with crystal clear water within 6 to 12 hours. It is not suitable for aquariums containing invertebrates such as snails, shrimps and other crustaceans.

Key Details

DetailVerified information and buyer relevance
BrandTetra, for buyers looking for this specific aquarium care product.
Product typeWater clarifier for aquarium use.
Size250 ml bottle, so the pack size is clear before purchase.
ActionHelps bind small particles so the aquarium filter can remove them.
TimingInitial effects in 2 to 3 hours, with clearer water in 6 to 12 hours.
LimitationNot suitable for aquariums with invertebrates such as snails, shrimps and other crustaceans.

What to Compare Before Buying

  • Aquarium type: Check whether the tank contains invertebrates, as this product is not suitable for that setup.
  • Pack size: The bottle contains 250 ml, so compare it with the amount you expect to need.
  • Filtration: The clarifier works by binding particles that are then removed by the aquarium filter, so confirm that your filter is in use.
  • Timing: If you want a fast visual change, note the stated hours for the first effect and clearer water.

Before You Decide

Confirm that your aquarium does not contain invertebrates such as snails, shrimps or other crustaceans before choosing this clarifier. Check the 250 ml pack size against the volume you want to treat, and make sure the aquarium filter will be running when you use it.

Brand

Tetra

Manufacturer

Spectrum Brands

Binding

Target

Product Group

Pet Products

EAN

4004218144132

Part Number

T273

Model

T273

Color

white

Item Weight

0.55 pounds

Release Date

October 19, 2011

Size

250ml

Number Of Items

1

Scroll to Top