Debra, I soup medium format in Rodinal and small format in Xtol. I use FP4, AGFA 100/400 and Tri-X. You can find developing times at www.digitaltruth.com For FP4 and Rodinal 1:50, 8.5 min. at 68F is ref. at the web site with a small tank. The time may be a misprint. Look at similar films with Rodinal and Xtol. I used 13 min and it worked fine.(posted 9231 days ago)