From wiki: http://ftb.gamepedia.com/Simple_Solar_Boiler
Quote"As the Boiler is left active, it will slowly calcify, reducing its Steam output. Calcification starts to take effect after 10,000 Steam production cycles (250,000 ticks, 208 minutes 20 seconds, just under 3.5 hours), after which time Steam output decreases by 1L every 100 production cycles, down to a minimum of 50L per 25 ticks (1/3 normal output) after another 208 minutes and 20 seconds. "
This is really happening on this modpack?