I've recently bought a few replacement/upgrade parts for my 12g & 24g nano-cubes from Nano-Tuners and Nano-Customs. I'm fairly happy with their service, but admittedly there isn't much that can go wrong with tank acessories besides shipping damage. I did have an issue where I bought a snap on skimmer that was too small to fit on the filter intake, but Nano-Tuners traded it out for me and sent me the proper size skimmer. I have no complaints with these guys and would recommend them to any of you who are held back by the limitations of your stock nano-cube (ie: lack of skimmer, dim lighting, and water overheating). You can visit them at www.nanotuners.com or www.nanocustoms.com
