Hi,

i have a terrarium with the sizes: 100cm x 100cm x 40cm (400l so 105gallon)
i have it already verry long and i want to make it perfect!
first i have removed the doors so its really easy to build on the inside...
first of all i did was collecting package foam (expanded polystyreen) and then i bought a big piece of it for the rear side of it to make the build more easy.

then i started to cut the pieces of foam and just begun to put them on the rear plate and pin them together with nails, peices of electical wire, and so on, for al song it can hold a bit force and it does not fall appart its ok!

then i went to a store where they could sell mortar fixative (glue for tile's like concrete) and if its white you and want another colour you can add concrete colour to make it more your style.
--if you chose a specific colour always add it to every layer you make on the foam!--
the best way to put the glue on the foam is to brush it on there with a verry old brush (beacouse after every layer you can trow it away!)
you have to make every layer so thin as possible becouse otherwise there will come some cracks in when its drying.
also check before you place a new layer that the prevous layer is dry for sure!

after a few layers (5-8) you can push hard on the glue and it wont break!
for cleaning the background you can even do it with sandpaper (only when there are enough layers)

further i am making it with 2 ventilation points 1 at the front beneath the doors and 1 on top of the terrarium with verry fine wire mesh.

for so far is this what i have done with the tank...
(photo's can be found in my first album)
and sorry for the english...