& FREE Returns
Return this item for free
  • Free returns are available for the shipping address you chose. For a full refund with no deduction for return shipping, you can return the item for any reason in new and unused condition.
  • Learn more about free returns.
FREE delivery Monday, August 22 on your first eligible order to UK or Ireland. Details
Or fastest delivery Saturday, August 20. Order within 2 hrs 13 mins. Details
In stock.
[{"displayPrice":"£12.45","priceAmount":12.45,"currencySymbol":"£","integerValue":"12","decimalSeparator":".","fractionalValue":"45","symbolPosition":"left","hasSpace":false,"showFractionalPartIfEmpty":true,"offerListingId":"0zpwO5LcyqKExpIVoZ4mHX%2FWidraC8ztiBHqKYzogsBzqiPQRT0s01jv%2B%2FCJOGOTq25VncQ3KBahLE%2F%2FcNRytBr68vhzpXoJXnKBypQIOXO%2FJeTlx3wFyxprcrXV8mwZ%2FyWk2nPCWogM%2FXMfGwCpm2QrNd7vW4YMFFOO3vZ3W47b%2BG6%2FjFOY9ZgR2kF4kJHu","locale":"en-GB","buyingOptionType":"NEW"},{"displayPrice":"£11.83","priceAmount":11.83,"currencySymbol":"£","integerValue":"11","decimalSeparator":".","fractionalValue":"83","symbolPosition":"left","hasSpace":false,"showFractionalPartIfEmpty":true,"offerListingId":null,"locale":"en-GB","buyingOptionType":"SNS"}]
££12.45 () Includes selected options. Includes initial monthly payment and selected options. Details
Price
Subtotal
££12.45
Subtotal
Initial payment breakdown
Delivery cost, delivery date and order total (including tax) shown at checkout.
Your transaction is secure
We work hard to protect your security and privacy. Our payment security system encrypts your information during transmission. We don’t share your credit card details with third-party sellers, and we don’t sell your information to others. Learn more
Dispatches from
Amazon
Sold by
Dispatches from
Amazon
Sold by
Return policy: Returnable within 30 days of receipt
Item can be returned in its original condition for a full refund or replacement within 30 days of receipt
Save 5% now and up to 10% when you schedule repeat deliveries.
• No fees
• Cancel anytime

Unlock 10% savings

Save 10% when you schedule repeat deliveries of 5 or more products in one delivery to one address. Currently, you'll save 5% on your Nov 20 delivery.

Choose how often it's delivered

From once every two weeks to once every six months

Skip or cancel any time

We'll send you a reminder before each delivery.
Learn more
Get it Monday, 22 Aug
In stock.
Deliver every:
[{"displayPrice":"£12.45","priceAmount":12.45,"currencySymbol":"£","integerValue":"12","decimalSeparator":".","fractionalValue":"45","symbolPosition":"left","hasSpace":false,"showFractionalPartIfEmpty":true,"offerListingId":"0zpwO5LcyqKExpIVoZ4mHX%2FWidraC8ztiBHqKYzogsBzqiPQRT0s01jv%2B%2FCJOGOTq25VncQ3KBahLE%2F%2FcNRytBr68vhzpXoJXnKBypQIOXO%2FJeTlx3wFyxprcrXV8mwZ%2FyWk2nPCWogM%2FXMfGwCpm2QrNd7vW4YMFFOO3vZ3W47b%2BG6%2FjFOY9ZgR2kF4kJHu","locale":"en-GB","buyingOptionType":"NEW"},{"displayPrice":"£11.83","priceAmount":11.83,"currencySymbol":"£","integerValue":"11","decimalSeparator":".","fractionalValue":"83","symbolPosition":"left","hasSpace":false,"showFractionalPartIfEmpty":true,"offerListingId":null,"locale":"en-GB","buyingOptionType":"SNS"}]
££12.45 () Includes selected options. Includes initial monthly payment and selected options. Details
Price
Subtotal
££12.45
Subtotal
Initial payment breakdown
Delivery cost, delivery date and order total (including tax) shown at checkout.
Auto-deliveries sold by Kettering Koi & Ponds Ltd and Fulfilled by Amazon
Other Sellers on Amazon
Added
£11.75
& FREE Delivery
Sold by: package pets
Sold by: package pets
(4193 ratings)
87% positive over last 12 months
In stock.
Delivery rates and Return policy
Added
£12.37
& FREE Delivery
Sold by: WUNDAPETS
Sold by: WUNDAPETS
(20826 ratings)
98% positive over last 12 months
Only 12 left in stock.
Delivery rates and Return policy
Added
£12.44
& FREE Delivery
Sold by: Hugglepets
Sold by: Hugglepets
(860 ratings)
89% positive over last 12 months
In stock.
Delivery rates and Return policy
Have one to sell?

Evolution Aqua Pure Aquarium - for a Crystal Clear Healthy Aquarium (50 balls)

4.4 out of 5 stars 5,332 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
Amazon's Choice for "aquarium"

Price: £11.83 £11.21
Available at a lower price from other sellers that may not offer free Prime delivery.
Note: This item is eligible for FREE Click and Collect without a minimum order subject to availability. Details
Pick up your parcel at a time and place that suits you subject to availability.
  • Choose from over 20,000 locations across the UK
  • FREE unlimited deliveries at no additional cost for all customers
How to order to an Amazon Pickup Location?
  1. Find your preferred location and add it to your address book
  2. Dispatch to this address when you check out
Learn more

Enhance your purchase

  • NATURAL, CHEMICAL FREE SOLUTION FOR A CRYSTAL CLEAR, HEALTHY AQUARIUM – Pure Aquarium contains beneficial bacteria and natural enzymes that rapidly break down organic waste leaving your aquarium clean and fish healthy.
  • REDUCES FILTER AND TANK MAINTENANCE – By naturally removing excess fish waste, fish food and toxins, Pure Aquarium helps your water stay fresher for longer, meaning fewer tank maintenance sessions and happier, less stressed fish.
  • CONTINUOUS GRAVEL CLEANING AND WATER FILTERING ACTION – Simply adding 1 to 2 Pure Aquarium balls per 25 litres of water once a week, Pure Aquarium reduces sludge and organic build up on gravel ensuring that your fish can thrive in a safe, healthy and crystal clear environment.
  • SAFE FOR ALL FISH AND TANKS – Pure Aquarium’s all natural ingredients only activate when needed and are safe to use in new or established aquariums.
  • AWARD WINNING PRODUCT, MANUFACTURED IN THE UK – Twice awarded product of the year by Practical Fishkeeping.
See more product details

Customer ratings by feature

Easy to use
4.6 4.6
Sturdiness
4.4 4.4
Easy to clean
4.2 4.2
Value for money
4.1 4.1
Product Safety
  • Use biocides safely. Always read the label and product information before use.


Frequently bought together

  • Evolution Aqua Pure Aquarium - for a Crystal Clear Healthy Aquarium (50 balls)
  • +
  • AQUARIAN Weekly Cleaner Water Conditioner
  • +
  • Tetra AquaSafe to Turn Tap Water into Safe and Healthy Water for Fish and Plants, 250 ml
Total price:
To see our price, add these items to your basket.
These items are dispatched from and sold by different sellers.
Choose items to buy together.

Product information

Technical Details

Additional Information

Warranty & Support

Amazon.com Return Policy:Regardless of your statutory right of withdrawal, you enjoy a 30-day right of return for many products. For exceptions and conditions, see Return details.

Feedback

Would you like to tell us about a lower price?

Product Safety

This product is subject to specific safety warnings
  • Use biocides safely. Always read the label and product information before use.

  • Warning:Not suitable for children under 36 months

Product description

Product Description

Pure Aquarium is best used once a week and a single tub will typically last four months when used in a 60 litre aquarium. Both Pure Aquarium and Pure Pond are best used with filters and can help to establish new biological filters.

Directions

See Description

What's in the box?

  • See Description
  • Important information

    Directions:

    See Description


    Customer questions & answers

    See questions and answers

    Customer reviews

    4.4 out of 5 stars
    4.4 out of 5
    5,332 global ratings

    Top reviews from United Kingdom

    Reviewed in the United Kingdom on 28 November 2018
    Customer image
    5.0 out of 5 stars Brilliant
    By Neee on 28 November 2018
    Our fish tank was very cloudy, so I had a look online and came across these. Reading the reviews I thought I’d give them a go, I put them in at 8:30 pm and took a picture 9am the next morning, and the difference in so little time is fab. Il be buying these again.
    Images in this review
    Customer image Customer image
    Customer imageCustomer image
    118 people found this helpful
    Report abuse
    Reviewed in the United Kingdom on 21 August 2019
    Customer image
    4.0 out of 5 stars make sure you put them in the FILTER or bag
    By Ian on 21 August 2019
    just a precaution I found the balls have not dissolved properly in the filter so if people are dropping them in the Fishtank ? DO NOT as you can see from the picture they do not dissolve properly after a week and half some have dissolved to small rubbery balls the fish may eat them if they was to get in the tank my piranhas eat anything that comes near them so they would have swallowed these undissolved little balls if they was in the tank
    Images in this review
    Customer image
    Customer image
    70 people found this helpful
    Report abuse
    Reviewed in the United Kingdom on 21 August 2018
    Customer image
    5.0 out of 5 stars Fantastic product save time and money
    By Theresa on 21 August 2018
    Really great product we have a small 10ltr tank with 4 tiny fish in we were changing the water and filters every two weeks, we have been adding one of these balls a week and we haven’t had to change the water for 5 weeks and only need to change one filter every two weeks rather than both filters. 100% would recommend this product. The water is clean and clear and our fish seem happy. The water in the photo is 4 weeks old!
    Images in this review
    Customer image
    Customer image
    74 people found this helpful
    Report abuse
    Reviewed in the United Kingdom on 6 December 2017
    52 people found this helpful
    Report abuse
    Reviewed in the United Kingdom on 16 February 2019
    Customer image
    5.0 out of 5 stars Brilliant Product - Took a view weeks to lower levels 👍
    By Whitread20 on 16 February 2019
    I purchased a tub for £8-67p with 50 Evolution Aqua Pure in it, for my 100 litre aquarium as you can see from the picture below the first one...my Nitrite and Nitrate levels kept coming in high and for my 100 litre tank i added a net in the left hand corner of my second picture with 8 balls inside.

    I didn't need the product to clear my water as you can see from the first picture...as i add AquaSafe to my water besides API zyme and stresscoat.

    I'm very pleased with the product and shall be purchasing more...highly recommend.
    Images in this review
    Customer image Customer image Customer image Customer image
    Customer imageCustomer imageCustomer imageCustomer image
    28 people found this helpful
    Report abuse
    Reviewed in the United Kingdom on 31 October 2018
    25 people found this helpful
    Report abuse
    Reviewed in the United Kingdom on 5 June 2017
    46 people found this helpful
    Report abuse
    Reviewed in the United Kingdom on 3 April 2019
    21 people found this helpful
    Report abuse