Replacement bio media rocks for The Pond Guy® ClearSolution™ G1 Filter System.

…Than Lava Rocks Atlantic™ Bio Rocks are the perfect accessory for Atlantic™ FilterFalls Pro Series and Oasis Series Waterfall Filters to keep water healthy and clear. The 0.5 cubic feet pond filter rocks have all the surface area but weigh 25% less than traditional lava rocks and half…

* Maximum Surface Area For Bacteria * Easy To Clean, Re-usable Biological Filter Media * Keep Water Healthy & Clear The Pond Guy® BioBalls™ biological filter media provides an excellent source of secondary filtration media to harbor beneficial bacteria and keep your pond healthy,…