Nano aquarium creators PicO Aquariums have an interesting new line of rimless nano aquariums that have recently become available to hobbyists. These nanos come in a ton of different sizes and offer features like Starphire glass and all-in-one filtration systems. The filtration is composed of a surface-skimming overflow media tray that contains filter floss material, an open area for a refugium, and a Rio return pump fitted with Loc-line fittings. One of the most intriguing things about the PicO Aquariums is their promise of being environmentally friendly. In fact, even their website and shipping are eco conscious, as their website uses 100% wind powered web hosting and they use carbon neutral UPS shipping.