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Product Details
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Shipping & Return Policy
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About Us
Instant Water Purification for Animals
The Water Purifier BIO-Cube provides an easy and effective way to ensure clean drinking water for your fish, pets, and farm animals. Designed for fast installation and operation without wiring or plumbing, this cube quickly removes algae, bacteria, parasites, and other contaminants. Its airtight seal helps maintain water quality even in tanks without continuous aeration, making it suitable for paddocks, barns, tractors, and other water containers.

Enhances Water Quality
Equipped with a Honeycomb Ultra-Absorption Activated Carbon Block, the BIO-Cube absorbs 99.6% of water contaminants, removing dirt, cloudiness, odors, and pathogens. The biological filter operates without energy, self-sterilizes at room temperature, and is enriched with polyphenols and trace elements. This ensures your animals have access to clean, safe drinking water at all times, reducing the risk of illness caused by dirty tanks.

Easy to Use and Maintain
Using the BIO-Cube is simple, place one or more cubes in a water tank. Each cube treats up to 40 gallons of water. Cubes can be filled directly from the tap and should be cleaned before reuse. While maintenance is minimal, replacing the cube every six months is recommended to guarantee consistent water quality for your animals.

Key Features
- Instantly purifies water for fish, pets, and farm animals
- Removes algae, bacteria, parasites, dirt, cloudiness, and odors
- Energy-free biological filter that self-sterilizes at room temperature
- Airtight seal maintains water quality without continuous aeration
- Easy installation with no wiring or plumbing required
- Treats up to 40 gallons of water per cube
- Minimal maintenance required, replace every six months
Product Specifications
- Dimensions: 3.94 × 3.94 × 1.97 inches
- Filter Type: Honeycomb Ultra-Absorption Activated Carbon Block
- Capacity: Up to 40 gallons per cube
- Suitable For: Fish tanks, pet water containers, farm animal troughs
What’s Included
- 1 x Water Purifier BIO-Cube
Frequently Asked Questions
Q: How much water can one cube purify?
A: Each cube can treat up to 40 gallons of water.
Q: Is it safe for all types of animals?
A: Yes, the BIO-Cube is completely safe for fish, pets, and farm animals.
Q: Does it require electricity or plumbing?
A: No, the BIO-Cube operates without wiring, plumbing, or energy.
Q: How often should I replace the cube?
A: It is recommended to replace the cube every six months to maintain water quality.
Q: Can it remove algae and bacteria effectively?
A: Yes, the Honeycomb Ultra-Absorption Activated Carbon Block removes algae, bacteria, parasites, dirt, cloudiness, and odours.
Q: Where can I use the BIO-Cube?
A: The cube is suitable for water tanks in paddocks, barns, tractors, or other containers where animals drink water.
Shipping policy
VolkHolz Shipping Policy
At VolkHolz, we are committed to providing you with a seamless and enjoyable shopping experience. Our shipping policy is designed to ensure that your purchases reach you in a timely and efficient manner. Below you will find all the details related to our shipping process.
Free Shipping to the UK
We are pleased to offer free shipping on all orders within the United Kingdom. There are no minimum order requirements, so you can enjoy this benefit no matter the size of your purchase.
Currency:
The Currency used in Shipping Policy is completely based on the local Currency of the customer.
Order Dispatch Time
We aim to process and dispatch all orders within 1-2 business days. Once your order has been dispatched, you will receive a confirmation email with tracking information so you can monitor your order’s progress.
Transit Time:
After dispatch, your order will be delivered within 3-5 business days. So the total Shipping time is 4-7 Business Days. Please note that delivery times may vary depending on your location and any unforeseen circumstances such as extreme weather conditions or public holidays.
Free 30 Days Return:
We want you to be completely satisfied with your purchase from VolkHolz. If for any reason you are not happy with your order, we offer a free 30-day return policy. You can return your items within 30 days of receipt for a full refund. Please ensure that the items are in their original condition and packaging. To initiate a return, please contact our customer service team at the details provided below.
Contact Us
For any questions or assistance, please do not hesitate to contact us. Our dedicated customer service team is here to help you with any queries related to your order, shipping, or returns.
At Volkholz, we want to make it easier for everyone to find what they love.
Volkholz is Operating under NUSMUR SL ( Spain )
Company Registeration Name:
NUSMUR SL
VAT number:
ESB22637011
Registered office Address:
CALLE CREU DE COBERTA, NUM 77
08014 BARCELONA - (BARCELONA)
Contact Information:
Email: Info@volkholz.eu
Ph. : +34627278152
Our Customer Support Available:
Mon - Fri 9:00 am - 6:00 pm
Sat - Sun 9:00 am - 2:00 pm
Volkholz is Operating under NUSMUR SL ( Spain )
Company Registeration Name:
NUSMUR SL
VAT number:
ESB22637011
Registered office Address:
CALLE CREU DE COBERTA, NUM 77
08014 BARCELONA - (BARCELONA)
Contact Information:
Email: Info@volkholz.eu
Ph. : +34627278152
Our Customer Support Available:
Mon - Fri 9:00 am - 6:00 pm
Sat - Sun 9:00 am - 2:00 pm