Thanks to everyone...Follow up Question...

Hi All:

Thanks to everyone who replied.  This was a big help.  I'm going to filter

through some of the suggestions and figure out a better set up than what I

have now.

For now though I like the idea of a dilution that will allow me long 
development times.  I'm using the Kodak Tmax film now.  Mostly the 100,
but 
in the future, I will be using the others.

What is a good developer/dilution (preferably using Kodak or Ilford 
chemistry) that will get me longer development times, like in the range of

10+ minutes?

The other problem (sort of) is that I like to work at room temperature 
because I just don't have a lot of room now.  Room temperature for me is 
74F.

If it's possible, some description of how it will affect grain and
contrast 
is much appreciated.

Thanks again!