Well my 125g cost $1200 the Fluval FX5 filter cost $300, I've had a 65g that cost $350, a 55g that cost $400 with fish, 2 30g, a 25g and a 10g, also bought a emperor(I think)or a penguin filter that cost almost $200 plus assorted plants and rocks and heaters and air pumps and some small Betta tanks so I can say THOUSANDS....