On every forum I have read, they say it is better to develop the Rollei R3 in one of its dedicated developers Rollei RHS or Rollei RLS. Everything else will give an inferior result or grey washed out photos...
Now I am proud to announce that R3 at 100 iso develops well in R09 1+100 one hour stand development at 20°C/68°F. 3 minutes pre-soak than 30 seconds of slow inversions and 3 taps. 3 slow inversions and 3 taps at half time (30 minutes).
Here is the result (other to come...)