My oldest son started his 30 liter tank today. He is only 11jr old and he collected old stuff from his grandpa's house. The skimmer and heater and mini power heads all were part of grandpa's tank 20jr ago. now he told me he want a led unit for his tank. I built him a stand and sump (all his own design). So lets see how this work out for him. Will post some photos later.