So this is our first tank, harder than you can guess to find the right pieces here in town.

Here is the tank, a standard 75gal aquarium without hood, came with a rod iron stand when bought second hand.

We could not find anyone here in town that carried hydro clay pellets for the bottom of the tank to help with drainage so we decided to create a false bottom using eggcrate and pvc pipe. Also using eggrate to foam over for the backdrop.

This is the silicone we are using to glue stuff and the foam that will become the background.

Siliconed the spacers to the bottom to keep them from moving.

We cut the black eggcrate to size and made room for the water area and the ramp for easy access. We will eventually put a rock water fall in the water zone using a canister filter on the outside of the tank.

We attached most wood pieces to eggcrate using a screw and washer, we are planning to use the plastic dixie cups to put some bigger plants in. Next step is to foam everything in place and let it cure for 8h.

We foamed the cups thoroughly to hide them from sight and to make them stick good.

We got everything foamed tight, the wood will serve as both platforms and planting spots. We will cover the foam in silicone and add some coco-fiber to make it look like rock/dirt.
(Next time we will put something under the background before foaming to make it come off the "door" easier.)

Foam has hardened so decided to try it out in the tank for looks and size estimates. Turned out better than expected. Still need to trim bottom and top to make it a better fit and then figure out the best way to anchor it.
We decided to go with a drop in background to make it easier to hide hoses and cords.
Next we have to decide on substrate and try to make the stream and waterfall work good.