Thanks for the answers.
Up to now I followed Thib's advices in the article "Carb Cycling":
1) determination of the BMR (which I adjusted according to my personal experience)
2) Upping calories by 300/day to bulk
Do you all not take care of you calorie intake in bulking?
My current diet plan (non-workout):
06:30 30g whey on awaking + 1 fish cap
07:30: 3 whole eggs + 100g oatmeal + 2 kiwis + 1 fish cap + 5g creatine
11h: 50 almonds or hazelnuts
13h: 100g grains bread + 100g salmon or beef or chicken + veggies + 1 fish cap
16h45: 50g almonds or hazelnuts + 20%whey/80%casein shake
21h: 150g beef or salmon or tuna or chicken + veggies + 2 tsp olive oil + 1 fish cap
22h: 3 caps ZMA