I am flat new to PDFs . I am reading before I hop into it. Using the 20 gallon/pair guideline, Id like to know what I can do to maximize the 20 gallons, specifically say if I put frogs on the floor of a 12x 12 x24 tank where they cant much get anything out of climbing walls, is that the same as building a full back wall with perches, plants etc or does the vertical wall( usable space) effectively count for more gallons in the same air space? Thanks. I hope be of help some day.![]()