hi-res sim of particles
i want to make a particle simulaction whit a realy hi count of particles to avoid space between particles, and save tham to
disc .
should i change the seed in the force pop to have diferent sequences to fill the spaces???or is there another seed for the entire particle simuation???

Having a random seed over time is a good way to randomise your birthing, but not in the way you are thinking, If I am understanding what you want correctly.

A high number of particles with a good turbluence value, and also a good amplitude value should get this looking good. Random seed is there to randomise the birth, or in a forcePOP that randomises the noise a little, but not like you are thinking.

Have a look at this file, maybe it is of some help.

there is a seed for the whole POP
it's directly on the POP Network SOP, called Random Seed
this should give you what you want
but do not change it over time
just generate several simulations with different seed and save them to disk
then bring back with file SOPs and render together
there should be a way to render them directly from disk, but i have not done it in H9 yet