I have a 5 roll box of 120 HP4 sitting in front of me, expired 5-79. On the box it recommends:
ASA 400, 7 min. in ID-11
ASA 650, 5 min. in Microphen
ASA 200, 8.5 min. in Perceptol
All at 68 F. Agitation for 10 seconds every minute.
Of course that is for fresh film but possibly will give you a starting point.
The price tag is still on the box. A whopping $2.00!