Ohko, also called Dragon Stone, is an argillaceous rock that does not influence the water hardness, and whose holey structure and warm earthen tones make it an eye-catcher for your aquascape that gives it a very natural impression.
Ohko, also called Dragon Stone, is an argillaceous rock that does not influence the water hardness, and whose holey structure and warm earthen tones make it an eye-catcher for your aquascape that gives it a very natural impression.