ok my tiger shovelnose cats need a new home, im in the early stage of design. i want simple very simple. im thinking wood frame and liner. basicly a wood box that hold water but large enough for 3-4 tsn's and maybe a pleco or 2. im not much of a carpenter but im sure i can build a square box, what i need help with is types of wood i should be using, what type of framing is needed to hold that much water and whats beter premolded plastic pond or liner? can anyone recomend a good site for plans? everywhere i look there are plans for above ground outdoor ponds. i cant seem to find plans for indoor ponds. please help oh and i plan to build this for my garage....thank you in advance