I'm thinking of getting some tropical fish. This tank seems cheap compared to other 200l ones- is this a reason to worry? I'd been planning to get an Interpet Fish Pod 120l but saw this one is not much more expensive. http://www.swelluk.com/aquarium/fish-tanks-404/aquael-classic-1785/aquael-classic-100-rectangular-aquarium-kit-333233.html?ref=shopping&utm_source=product-search&utm_medium=googlebase&gclid=CMuig_qyuL0CFYbMtAod3CUAZw