Activated Charcoal and Gravelstone

Activated coconut charcoal and gravelstone shipped in cardboard box

Activated Charcoal and Gravelstone

Regular price $314.99
Shipping calculated at checkout.
  • The Original Dr. Hulda Clark Products
  • Leader in Purity Since 1993
  • Certified and Audited GMP

1 cu. ft. of pre-washed activated coconut charcoal and gravelstone for the Whole House Water Filter. Gravelstone helps to prevent the carbon from entering your house's plumbing.

Replace the carbon in the main filter every 3 years with normal use. For quicker installation, buy the Carbon & Tank.

This item is assembled to order. Due to the special order status, orders for Activated Charcoal and Gravelstone cannot be canceled. Please note that this item may not ship for 1-2 months after your order is placed. If your order includes other items, the other items will be shipped immediately and the Activated Charcoal and Gravelstone will be shipped separately when ready.


All orders are shipped directly from our factory warehouse in Chula Vista, California. Orders received before 12PM Pacific Time ship the same day (excluding weekends and holidays). Orders received after 12PM Monday-Friday will ship the following business day. Your tracking number will be emailed from as soon as your order is shipped. 

For international shipments, duties and taxes may be applicable. By ordering from this website, you acknowledge that it is your responsibility to pay any duties and taxes.

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You can return any unopened or unused product within 30 days on the date on your invoice. Simply send the item back with a copy of your invoice. If you are unhappy with any consumable product, you may return an open item for a refund as long as at least 50% of the original contents remain and the return is done within 30 days of the date on your invoice.  

Please report any overages, shortages, or damages within 10 days of receiving your order.

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