I think Coopers say three months.
I was fermenting mine at 13C, but with two packets of yeast.Yes, this is one of the few kits out there with a true lager yeast so it takes a long time to come good, 10-12 weeks. And that lager yeast work best at lower temperatures, used to do mine at 12C.
I've dry hopped it with Saaz and Hallertau in the past, 30g should do and will really add something.
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