Sorry for my late-ish reply. But you cannot pick adjacent sinks, this means diagonally aswell. I went with 2, 9 and 21, there are probably other combinations, but too lazy to find out.Thanks for your help ... Nom i'm in " The Topaz Ark - Power plant " and if i correctly understand i must do 32 mana-amps but i can correctly understand ( 14 and 18 but i can only select one sink ...