How I changed my bottle filter. I went from pot scrubbers to lava rock and ceramic rings. Pick up lava rock at your local hardware store for about $5-$6 for 10 pounds or so.
by pinkchocolatebreak
by chrisBcheA27
by Crafty Prapty
by PipeCleanerCrafts B
by Creative Art
by Easy Decoration
by Woolen Craft