Buckeye Hydro's media funnel works perfectly for adding media to tanks with 4" or 6" ports. The funnel snaps into a 4” or 6” mineral tank opening for stability when pouring media. The neck of the funnel has been carefully designed to allow trapped air inside the mineral tank to escape when media is poured in. This heavy duty part is blow molded out of high density polyethylene for exceptional strength and durability. The oval design provides an extra wide opening for ease of use when pouring. Handles are molded into the funnel for added convenience.