This shot is a frontal view of the previous picture. As it can be seen, the main filtration is a under the tank trickle filter. It is filled with plastic flex rings. The bi-union feature comes in handy when the pump needs to be removed for cleaning, or when the trickle needs to be removed. This allows the user to reduce the water flow into the tank for any necessary reason, such as cleaning, feeding etc.
All lights are on timers following the photo period of the day and the seasons.
This picture represents a transition in trickle filter design and terrapin housing. After having used a 180 gallon glass tank for a few years, and watching the terrapins swim endlessly up and down the sides, I felt that perhaps a round tank would be better for their state of mind. I thought that maybe the roundness would create the illusion of an endless swimming space. Underneath the basking platform, is a internal prefilter. This prefilter is held in place with a plastic tank adapter that has been screwed into the bottom of the kiddy wading pool.