If you have access to chemicals then why not mix your own rodinal?
 
 http://www.digitaltruth.com/techdata/rodinal.php
 
 That one claims to be the a Rodinal formula.
 
 Nick

I've no experience with FX-1, but if you're able to mix your own
developers from scratch, you might want to consider Suzuki's DS-12:

http://silvergrain.org/Photo-Tech/film-dev-recommend.html

I've not used it with Efke films, but I've been trying it with some
others, including Ilford Pan F+ and Fomapan 200, and I like the negatives
I get from it. Unfortunately, there are no times for Efke films in DS-12
in the Massive Dev Chart, or even for Efke in Ilfosol S (the developer
Suzuki recommends basing DS-12 developing time starting points on), but if
you're willing to shoot a test roll and carve it up into pieces, you
should be able to get in the right ballpark pretty quickly.

At those dillutions I'd advise you to switch to Adox R09, that is the late
Calbe, and it's based upon the Rodinal formula.
I ordered mine online on www.fotoimpex.de, they ship to Belgium (and I think
within Europe) for 10?. If you order some extra film, paper,... 10? is
almost free.

Mixing one's own Rodinal is OK if you have experience with mixing chemicals,
as the Rodinal formula is said to be potentially _very_ dangerous. I
wouldn't try it for myself, as both Rodinal and Adox R09 are relatively
cheap products, and hence not worth taking the risks

  I am not familiar with FX1 so can't comment on it.
  Two others have suggested on-line developer formulas. On
is on the Silver-grain site. This is run by Ryuji Suzuki who
is a very knowledgable chemist who has researched emulsion
making and other aspects of photo chemistry. His formulas
are trustworthy. The other site has a formula supposidly for
Rodinal but it does not look right to me. For one thing is
specifies sodium hydroxide where Rodinal contains Potassium
hydroxide. The main difference is in the solubility. The
Potassium salt is considerably more soluble in water than
the Sodium salt. Also, there is no indication in any other
Rodinal formula I've seen of the use of metabisulfite.
Rodinal does contain Potassium sulfite.
  The prodedure for making Rodinal does require care mainly
because of the generous amount of heat generated by the
hydroxide as it goes in solution. As a knowledgible chemist
this should not present any problems for you.
  High acutance developers were popular when film had much
less resoluton than it does now. Mainly, its purpose is to
compensate for poor film sharpness and poor optics. It does
so at the expense of greater grain and probably some loss of
actual resolution. If the EFKE film is similar to the
original Agfa film it should be single coated with a fairly
thin emulsion. The virtue of that is lack of scattering in
the emulsion with attendant gain in resoluton and sharpness.
 Since the actual formula for Rodinal is proprietary its
not available in any publication. Some pubished formulas may
be exact but many of them seem to be guesswork.

Rodinal is an excellent formula for fine-grained films however you will  
loose about 1/3rd to 1/2 stop of film speed. I personally would use D-23.  
It's easy to mix, keeps well and produces finer grained and sharper images  
than Rodinal. If you need a higher EI than 25, go with Microphen which  
will give you a good EI50 with this film.

Kodak's D-23
Water @ 125F
Elon
Sod. Sulfite
Water to make    750.0ml
7.5g
100.0g
1.0L   
This has probably been the most utilized developer in the history of black  
and white photography ! It's simplicity and good all around working  
characteristics have endeared it to many fine art photographers.

BTW, if you are using TMX-100 or TMX-400 I strongly recommend this  
developer. It gives T-grained films the finest grain I've ever seen and  
keeps the highlights in check.

Development times for full strength at 70F are;
TMX -100 -- 9.5 min
TMY- 400 -- 8.0 min.

Development times for a 1:1 dilution at 70F are;

TMX -100 -- 14min.
TMY- 400 -- 12min.

Development times for a 1:3 dilution at 70F are;
TMX - 100 -- 21 min.
TMY - 400 -- 20min.

Elon - Metol
Monomethyl paraaminophenol sulfate - CH3NHC6H4OH)2H2SO4 Molecular Weight :  
344
Characteristic : Off-white crystalline solid
CAS No. - 55-55-0

You can order them through Fotoimpex in Berlin:

<http://fotoimpex.de/CalbeFotochemie/index.html>

The Rodinal equivalent made by Calbe is the R09.

I've been using a variation of fx-2 made by photographers formulary called
tfx-2. The advantage is that fx-2 gives better tonal graduation. I intend to
mix up my own version of fx-2 in the future.