I wasn't boiling forever. I ran it through the RO and sweetened it to 14% first. I boiled for less than 2 hours. On Sunday afternoon I had some guest in the sugarhouse and after I ran the concentrate from the first 550 gallons to the feed tank I was supposed to start concentrating the 250 gallons that was in the bulk tank and boil that too. Boiling alone and keeping guest entertained I forgot all about the 250 in the bulk tank. I woke up in the middle of the night and thinking something wasn't right. The permeate tanks should have overflowed and they didn't. I figured out why yesterday morning.