The Deuterium Tank stores unused Deuterium. The tank capacity can be seen by clicking on the resources-page, viewing the detailed description by clicking on the name in the buildings page, or it can be calculated with the following formula: Note: New universes have changed the rules a lot. On those universes, initial resource limit is 10,000. The first tank costs 1,000 Metal and 1,000 Crystal and enchances the limit to 20,000, the second to 40,000 and so on. The formula for tank capacity there is The formula for cost (Redesign) is