They are these shitty little pumps i use for my dwc that truly suck. They get clogged/burn out easily. Theyre cheap though, like 15 bucks. They create a flow that makes my plants go crazy. Id prefer something better for a small amount more that will last longer and be more reliable. Ive had a hard time finding stuff. These pumps have to suck up from the bottom and shoot the water forward in order for them to be practical for my set up. They also have to be able to stay situated in a position via suction cups like most water pumps. I dont have a better picture of the ones i use but they're at like every hydro store there is.
