I haven't done APX 25 in D-76, but I have done APX 100 in D-76, so let me mention a perhaps semi-relevant observation:(posted 8637 days ago)The published times are too long! My APX 100 would have been overdeveloped - too dense - if I had given it the suggested time (I think 13 minutes in D-76 1:1 at 68, right?) I use 9 minutes for APX 100 in D-76 1:1 at 68, and consistenly get nice, even, "medium" negatives that print up beautifully on our old Omega condenser.
I would approach the published times for APX 25 in D-76 with suspicion, if I were you. Follow the published times for your first roll, but watch out for overdevelopment: you might want to give your next roll less time...