For the basin, technology and device I wanted to spend as little as possible. So basin incl. Cupboard and coverage was available, as the powerhead, heater, filter mat, rear wall elements.
For the little pump behind the mat filter I have € 29, - paid. The quartz sand has a total of € 8, - swallowed up and that was it already roughly. The Stones has taught me an acquaintance from a quarry for free.