1/4 Tank: Accomplished.

Can I just let out a big YAYYY!!!!
Tonight we successfully assembled my homemade (kinda ghetto) 1/4 tank.
 Basically, we dug the crabs out, and stuck them each in a separate lidded container with moist paper towel and a hide for the next 24 hours. Tossed all the sand (BAD IDEA, but Good Idea), and cleaned my 30 breeder out. We cut a rectangle of 3 inch high plexiglass to fit as a waterproof barrier, and sealed with caulk... white ... caulk.
Ideal? not so much. Does it work and was it free? Absolutely. We set that in place, sealed it and waited. And then just tonight set it all up! It was a good idea to toss all the sand bc it was stankkyyy.
Bad idea because... Im low on sand! As of right now they dont have quite enough, but theres enough to cover the hides and bottom so it will do. I made sure to use multi sized stones in the water, with places to climb out. the filter is turned into a bit of a waterfall.
Here it is!:

Update: The caulk is crap and is peeling. but the water isnt leaking or anything... yet. I plan to get more sand, get my hands on some better and CLEAR caulking. and re do it when i can!