@ tm36usa :I bought/ordered the LEDholders in a store in Holland (Eindhoven) called Coditronics, so not in a onlineshop. They sell all kind of electronic parts. They do have an website with everything they sell. Coditronics @ mouflo001 : I use an Innovatek reservoir and that fits just fine. I don't know if my reservoir is smaller then your Aquatube. I got my acrylic glass from coolcase and the larger acrylic from bouwplastics both in Holland. It's all in Dutch so I don't think this will help you very much.