the switch itself i got from jess but they sell them on ebay for like $6
the outer casing I got from home Depot a short PCV section for like 50 cents (size 1.25") and an end cap (size 1.50") Drilled some holes so water/air can go in and out there's on the bottom now too. The acrylic i just had laying around but it's like $3 for a small sheet at home depot, to bend it I just held it over a candle constantly moving it so it would heat up evenly, when it got bendy enough I just molded it to where i wanted it to go.
Nice meeting you at baymac, you handed me the frag for the BAYMAC tank and I was struggling to get your tape off lol.