The surface is rough and has many micro holes, these characteristics are suitable for the micro biological animals to grow and breed, which can be shaped in to a film.In the water treatment, it can also replace quartz sand, Activated Carbon, anthracite and so on which can be used as filter medium.

Volcanic rock filter media, Filter media in water treatment

Volcanic rock filter media advantage:
Volcanic rock makes and excellent biological and mechanical filter media
High pores
Ideal for biofall, barrel and similar pond filters
Ideal for wet/dry and canister aquarium filter

Payment 

1.25kg kraft bag or PP Bag.
2.Big bag: 500kg PP Bag
3.According to customer's requirements

Our factory was founded in 2004 year

HONGYA  Activated Carbon Group is China’s leading supplier dedicated to providing its customers quick quotes, good quality products, competitive prices and faster deliveries of activated carbon products and other industrial products. Founded in east-central China, it develops closer customer relationships and taking on a larger role in the total supply and manufacturing chain. With over 12 years of expertise in activated carbon industry, the company is committed to providing a range of high quality, innovative, cost-effective activated carbon products which are used in gas purification, decaffeination, gold purification, metal extraction, water purification, medicine, sewage treatment, air filters in gas masks and respirators, filters in compressed air and many other applications.

Before sale:                                                                                

1.Free to provide samples of activated carbon. 
2.Free to provide information consulting and technical guidance.

3.The packing can be made according to customers’ requirements.
4.Reply to your enquiry in 24 working hours.

After sale:

1.If confirmed is a problem of the product itself, the company will provide 

free replacement or a full refund in a timely manner.

2.Exclusive and unique solution can be provided to our customer

by our well-trained and professional engineers and staffs.
3.The supplier provides the buyer with the new craft, new technology and all other related advisory services.

If you have any questions,let me know and I will be at your service at all times,thanks.