An 8oz jar of clean, pest free chaeto grown in our own systems, not pulled from someone else's sump. Rapid growth means real nutrient export for your refugium, and it comes with beneficial amphipods as hitchhikers instead of aiptasia. Everything is cultured in house in Vermilion, Ohio and bottled fresh the morning it ships. Orders go out Monday through Wednesday only so nothing sits with a carrier over the weekend. 100% live arrival guarantee, if anything shows up DOA I reship it free, no photos or claim forms needed.