This is my proof on concept... I'm converting my koi pond to a gold fish pond. Ideal I want to create a steam punk attitude with this. Already the sound of it is quite relaxing, and the blue provides a nightlight for when I come in to refill the humidifiers too early in the morning and keep tripping over things. I'll eventually replace the PVC with copper witch will oxidize nicely in time. The ultrasonic floater in the back seems to keep the vault at 50% realative humitdy when running, which is a green effort to recycle brine water from my RO system. Currently 15 goldfish live in the tank which will be recyled into the nepenthes when they die. (we'll see how the digestion / rotting goes at that point) The tank is filtered by a 50 micron filter which I purchased at bulk on ebay for my RO system, the housing was bought for $15 from Menards which is the same size. Eventually I want to build some wooden thing around the koi tank to hide the stock tank, but until then it will remain shown as is. The photos was taken at the start of "night" so there are some conflicting shadows in this photo.
From Koi Pond