Aquarium and Pond Biological and Mechanical filter media
Volcanic Rock makes an economical biological and mechanical filter media
Can work for de-nitrifying (nitrate removal) due to deep pores and over all surface area in comparison to over all size and surface area exposed to water flow & oxygen.
Generally ½ to 3/4 inch size is ideal for coarse mechanical filtration (the size may vary though from pea sized to a little over 1")
We hand select this volcanic rock VERY carefully for the size that is best for most applications from aquarium to pond based on Carl Strohmeyers extensive experience and use of volcanic rock as an aerobic/anaerobic bio filter medium and mechanical filter medium. Beware of copycat sellers that now sell this that claim experience, but in reality have little or no experience with this product, unlike Carl Strohmeyers innovation and experience using this product dating back to the early 80s.
Ideal for Bio fall, Savio Livingfalls, DIY, barrel and similar pond filters
Ideal for wet/dry and canister aquarium filters
This Volcanic Rock can also simply be placed directly on the bottom of aquariums or fish bowls. Best results with this method are achieved in areas of more water movement.
Care should also be exercised when used directly on the bottom of an aquarium where fish with delicate fins or barbells are present such as Bettas or Cory Catfish. With these fish, placing the Volcanic Rock out of the way or partially covering the rock with something more smooth is recommended if used directly in the aquarium.
Inert and safe for all aquarium and pond applications (including marine)
Can be used in FW to work similar to live rock in marine
Can easily be crumbled smaller for medium mechanical filtration with the use of a hammer or mallet.
Used for years in fresh/saltwater aquariums and ponds by the "Aquarium Information" experts and research professionals that provided this vast online aquarium/pond information here at AAP and "Aquarium/Pond Answers".
For the superior Bio Filtration Media, with more surface area than any other bio filtration product (including this volcanic rock), consider SeaChem Matrix with more internal surface area liter per liter, especially for de-nitrification.
Sold by the pound; 1 pound is approximately 5 x 5 in volume
$4.99 per lb. Jump to Shopping Cart
(to order by pound, simply enter the number of pounds in the shopping cart as quantity)
Or 10 lbs. for $22.99 Jump to Shopping Cart
(additional shipping may apply outside the lower 48 USA or to PO boxes; limit 20 lbs per order within the lower 48 USA)
Lees Filter Saver Bag (4 x 8)- $5.59
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Can be used with Volcanic Rock, as well as many other filter loose media products so as to prevent damage to filters or for easy removal