Well i did it - went for the ACE - great advice guys, thanks. (from my question here
http://www.thehomebrewforum.co.uk/showthread.php?t=69164 )
Completed my first brew in it a week ago today, So thought i'd share my experience. It's currently still happily bubbling away, so seemed to have gone ok as far as I can tell. I tried an Old speckled hen clone recipe because I wanted to follow a recipe in some form of a beer I could relate to, as a first attempt of all-grain.
Although I had read loads, I still felt quite unsure I was getting things like strike volumes, sparge volumes, pre-boil volume, evaporation rates to get post boil volumes correct, but decided I just need to give it a go and jump in.
The recipe called for 12L strike water with 5kg grain. I calculated the water space under the grain basket to be just under 7 litres (6.7L using pi*(r^2)*h). So I used 19L start water in ACE (i.e 7L + 12L), added my grains.
Mashed at 68C - for 90min (10min @2500W, 80min @1500W)
Grain out - water reduced to 15L.
Estimated 7% evaporation rate for the boil, so used 12L sparge to bring to 27L pre-boil volume. With target volume 25L (2L wastage - so hopefully 23L ferment volume).
Went for 60min boil - 10min @ 2500W, 50min @2000W - but during the 2000W stage it lost the boil (I was brewing in the garage late evening) so I interrupted the cycle and took the remaining time on the timer (about 35mins) and used manual mode and set to boil @2500W for 35mins. It took several mins to bring back to boil before the timer started again so the total boil time was about 70mins.
I ended up with post boil volume between 25L mark and 6 gal mark - so ~24L. It filled up to my 23L mark on my ferment bucket. Complete beginners luck :grin: :whistle:
My pitching SG was 1056.
Some questions - What wattage are people generally using for boils ( I read earlier someone used 1800W but I seemed to lose boil on 2000W (lid off)). Do you guys do your boils with your lids on or off and what evaporation rates do you achieve with lids on.? Just looking to start trying to optimize wattage/energy use.
cheers