Greg, just my $.02- I have had grey mold almost every year, and my liquid copper fungicide worked very well on it. Before spraying, I removed and bagged all the infected leaves I could find. Then sprayed very thoroughly on the tops, bottoms of all leaves, and all stems right down to the soil line. Note, I used 1/2 of the weakest strength on the Southern Ag brand label, mixed with a tiny bit of organic dish soap as a spreader, which I put in at the end so as not to get too much suds. Works perfectly.
In my hands the bleach spray wasn't good, maybe I mixed it too strong, but I devastated some of my plants. In B54reds hands it works really well.