Sorry to hijack the original thread but I'm in a similar situation and didn't want to start another new Grainfather thread. I've got two questions that I was hoping someone might be able to help me with.
My first question is this, I know the "standard" batch size from the instruction manual is 23L with a 28L boil, I would prefer to get something closer to 19L in the fermenter with maybe an ~24L boil (wont know for sure until I figure out the boil off rate, but I'm assuming about 5L an hour from the instructions). Depending on my efficiency, this could mean that my grain bill is smaller than 4.5kg. Is anyone else consistently doing batches with grain bills this size and does it work as well as it does for larger sizes? I know there are instructions in the manual that just say add more mash water and subtract from the sparge water later, but I was wondering if people have found any issues with having a high water to grain ratio?
My second question is about the 18L sparge water heater. Is it worth spending the extra money given that I have a 15L stockpot and could probably just heat the water on my stove, although it won't be as easy to be accurate with the temperature, and my stovetop is terrible. It only just gets 10L to the boil, so I'm assuming I could get ~14L to 75C (haven't tested though). My other concern is running a 2000W grainfather and a 2000W sparge water heater on the same circuit in my kitchen, too much?
PS, I've never brewed all grain before so apologies if some of these questions seem obvious. I'm not really considering buying a grainfather so much as I've already decided to buy one, but just hoping to get as much info as possible so I can start off on the right foot.