I just developed my first roll of FP4+ rated at ASA160 in rodinal 1:25 dilution, very excited. I am happy that I didn't ruin the film, except a little dust on the film.

After exam the negatives under a 4X loupe, I found they are a bit grainier than the negatives I got from photo lab, I didn't ask them what developer they use.

My question is, can I use rodinal full strength, and is it going to give finer grain? What other developer do you recommend to try?

Thanks for your help.