My first batch I used grain milled at the online retailer, fly sparged, and the efficiency was terrible, 69-70%.
My second batch I milled my own grain, batch sparged, and got 78%.
The third (last one) I milled my own without changing the settings on the mill, batch sparged again, and got 91%.
Readings are with the cheapest refractometer I could find off Amazon. No stuck sparges thus far. Is this normal?
I would be happy to have good efficiency, but I can't understand why there would be 13% difference with no change in grind.
Any thoughts?
My second batch I milled my own grain, batch sparged, and got 78%.
The third (last one) I milled my own without changing the settings on the mill, batch sparged again, and got 91%.
Readings are with the cheapest refractometer I could find off Amazon. No stuck sparges thus far. Is this normal?
I would be happy to have good efficiency, but I can't understand why there would be 13% difference with no change in grind.
Any thoughts?