tomato leaf mold

[Sniper Steve]

I'll second the use of Serenade. I don't like the smell, but that stuff works. Also, like riverwolf posted. Sulfur is another things that will work. When I need to use sulfur. I normal just buy a bottle of Safer Fungicide. If I remember correctly. It's like a 12 or 14% sulfur. I'm sure you should be able to find either one at the local garden store. Both of them are listed as OMRI also, so finding them should be easy.
Good luck

Steve