Abstract: The present invention relates to the field of hydroponics plant growth in cylindrical pipe bodies or conduit units. This invention solves three current operating problems in these hydroponics units: (1) Easy observation of the nutrient level and root systems in the main reservoir, (2) Direct access to and cleaning of the unit interior without disturbing the ongoing operation of the system, and (3) A method to adjust the interior liquid nutrient level and/or drain the system contents. In the present embodiment, the main body of the hydroponics unit consists of a 6-inch diameter PVC pipe body (reservoir) with four growth sites. The pipe body is capped at one end with a 6 inch-diameter threaded female adapter with cleanout plug, and at the other end with a transparent Plexiglas window to permit observation of root growth and nutrient solution levels in the reservoir.