I've had good results with D23 at 1:3. FX2 (double the accelerator) worked well also, although I used to get a stain (like pyro only tending towards the yellow orange). That surprised me since FX2 is glycin based and supposed to be resistant to staining. Lack a color densitometer so didn't explore it further and went back to D23. Cheers, DJ.(posted 8528 days ago)