Getting back in the game

Hey everyone it's been a little while since I've been on the site, and a while since I've been in the reef keeping hobby, but after a visit to the Tennessee aquarium today I've been inspired to pick the hobby back up! I picked up a 10 gallon tank today and I want to build a false wall in it to hide a return pump and heater and the filter media, but I need y'alls help. I need some advice on how exactly to go about building said wall and some things to keep in consideration while doing this. Thanks in advance!

 

i've seen people use expanding foam in a can and push rock ruble and sand into it to add texture. Also, I've seen styrofoam walls.

 

Hmm... the styrofoam sounds interesting. Do you know where I could find that? I was originally planning on using acrylic and cutting teeth into it for the intake then building compartments in it. Something similar to the aqueon evolve series tanks.