liquoring back

[paulg]

my last brew came up 6 litres short due to very high evaporation with new gas burner,but high sg , so I added 6 litres of water to the 18 to make the 25 brew length and bring to the almost correct sg 2 points under 1044 should have been 1046.
today after 9 days in the fermenter I checked the sg and it was at 1.018
my question is does adding too much water to the wort dilute something that causes the fermentation to
a) stop at higher fg or
b) have a tendancy to get stuck
I have roused the yeast and will check again in a few days time,the initial ferment was as per normal a couple of days with good krausen and then a covering of smaller bubbles .I then didnt check it from day 3 until day 9

any ideas
Paul

[Eric]

I wouldn't have thought adding water to reduce gravity would reduce the fermentabilty of sugars in the wort, but wonder if that more violent heat could caramelise or otherwise convert simple sugars to more complex ones.

[Underground Joe]

On a similar subject and without hijacking this thread I had two brews ferment too far and come out 0.6 and and 0.7 percentage stronger than predicted. They went into the fermenter at the predicted gravity but they both carried on a bit. They have both turned out very nice and don't blame the the yeast for having a little party, but I am hoping there is a more scientific reason.

[Jymbo]

I'd say the problem was with the yeast - maybe an old packet or one that hadn't been stored properly. Adding extra water shouldn't cause any problems.

[darkonnis]

+1 Jymbo, liquoring back shouldn't do too much. Out of interest what yeast have you used? whats temperature been like? If you want to drop that FG further, you could always put a bit more yeast in.

[paulg]

I was using safale so4 and had the temp set at 19 in my fridge ,I have raised it to 20 and added some yeast nutrient and it appears that maybe it is fermenting a bit more(or just eating the nutrient) as the bubbler is bubbling all be it only occcasionally
will check hydrometer again in a few days