Ah.  Well, heat deletion through drip cooling seems impossible to avoid. .  Although, heat deletion is essential in the game unfortunately.  Earth doesn't overheat because we radiate heat in to space.  There is no equivalent to that in this game, so heat will keep building up until the colonies die unless we can delete some. @SkunkMaster Nice setup.  Have you considered moving the water away from the geyser though?  Because I think the high pressure of the CO2 will stop the geyser from producing steam, which reduces the water output a little.  The effect isn't that big, but it would be nice to get all the water possible.