Contact Known Matter
Product questions and support.
Known Matter reef-care products are packed in Victoria, Australia.
Include an order number, product code or clear photographs where relevant so we can understand the enquiry.
Product and safety information
For preparation, handling or aquarium-use questions, review the product page and safety information before use.
Postal location
Victoria, Australia. A return address will be provided when a return is authorised; do not send opened chemical products without written directions.