This is the build log for the 29 gallon I got for my birthday a month ago. I'm planning on having the hermit crabs I have now plus 2 Es and 2 Ruggies(maybe another exotic instead of ruggies, not sure yet). So, in total that would be 4 PPs 4 Es and 2 Ruggies. So, in this tank I'm planning on having a fake rock wall background(polystyrene coated in cement) and a built in pool, with lots of plants. I'm going for a kind of jungle look here, with vines crawling up the walls and hemp nets. So far in the last 2 days I carved the polystyrene and added the first layer of cement. I also siliconed the plexiglas into a pool type thing. Here's a picture of what the wall looks like so far: [img width=400 height=300]http://img243.imageshack.us/img243/5915/img0152v.jpg[/img] And, the picture of the pool [img width=400 height=300]http://img413.imageshack.us/img413/487/img0156oa.jpg[/img] As you can see, it's kind of a sideways T shape forming 2 separate areas: one for salt water, one for fresh. I am also making the steps out of carved polystyrene covered in cement. I also did my first leak test, and had 3 leaks. Siliconed them immediately. Hopefully there won't be anymore, I'll test again in 2 days.