I would like to have particles attract each other but maintain a certain distance.
For that purpose i added two popinteract nodes.
One which repels with a small radius and a force of 2 and one with a much bigger radius which attracts with a force of 1.
For me it looks like only one of the nodes is influencing the particles, but never both … is it not possible to have two popinteracts in one solver ?
How could I acieve this behaviour in pops ?

check out the pop steer nodes:

pop steer separate and pop steer cohesion are what I belive you are after

you may also want pop steer seek if you want all the points to chase some targets
also pop steer align is important to get flocking behaviour

One thing to note is that the some of the nodes are quite slow if they are querying a large search radius in a dense point cloud

hope that helps

New Houdini 14 Nodes !! Very interesting ..
Thanks for the Tip. Just started testing !!

Oh right, I forgot basic flocking POP nodes were as part of the crowds toolset.