>>4239757aah got it
it was developed with standard BW chemicals, not Rodinal
But I'd recommend you go on r/analog on reddit and search for "Double-X Rodinal", I'm sure you'll find results and see how it normally looks
Personally I think that Double-X is very grainy and gritty
Which is not bad per se, but you gotta keep that in mind when using it
For me, things tend to look like they're from a newspaper