No picture of the sump pump pit, no top on it either. The idea was to try and keep the diffuser from stirring up sediment. It is a single diffuser sitting on the same style of base as then one pictured above, the base has rock in it to hold it down and is bolted to the bottom of the sump pump pit. The sump pump pit was free, no idea where it came from, it ended up in our yard after wind storm. If I had to buy something it would have been a plastic trash can. I do have an extension pole holding up the diffuser inside the pit.
