Fermentation seems isn't wanting to move from 1.020 from 1.052.
Looking back at Citra, gave an attenuation of 67%, applying that to this brew gives with a fudge factor for using less fermentable Crystal malt suggests 1.020 is about the right ball park.
The big question in my mind now is if 67% fermentability of the base malt is too low, and if it is then this is something new to consider in the calculator.
Both Citra and Dark Green Goose had a similair 69degC mash temperature. Nelson,was mashed cooler at 65degC gave a 75% fermentability.
| Maris Otter | Crysal 80L | Total | ||
| 1.052 | 1.052 | |||
| 52 | 52 | 52 | ||
| 31.6727272727 | 1.1818181818 | 32.8545454545 | ||
| 19.1454545455 | ||||
| 1.0191454545 | ||||
| Qty Weight | Qty % | Fermentiiblity | ||
| 5500 | Weight | |||
| 5000 | 0.9090909091 | 67 | 60.9090909091 | Percentage Maris Otter |
| 500 | 0.0909090909 | 25 | 2.2727272727 | Percentage Crystal |