Note: GFO should be placed in bag, then inside Filter Media Cup. Also, our 4" Filter Media Cups are designed to fit sumps that use standard 4" filter socks. If living in a cooler climate (below 75 degrees) allow the cup to acclimate to room temperature before squeezing into sock holder.
Our 4" Adapter is designed to work with our 4" Filter Media Cup and has been tested to fit the Aqua Maxx 4" Sock Holder.
All orders will ship same day if ordered between Mon. - Thurs. before 2pm Eastern Time,
otherwise will ship next day.
Orders recieved Fri. - Sun. will ship out the following Monday.
