poison dart arrow frog

Hi guys, We are very new to all of this, we are looking to set up a poison dart frog vivarium and we have a large fish tank (30 x 15 x 20 inch) what would we need to get? we are looking to spend about £200 max could you please post links to websites of what we would need and also of where we...

2 oyapoks and full setup, tank 30x30x30, light & housing, heat mat, food (flies, springtails and woodlice) and culture material