overcrowded lobelias...

hi, i made the mistake of planting a whole packet of cascade mixed lobelia seeds in a small area (2 columns of a seed tray). i didn't think they would all germinate but they seem to have! now i have about a hundred seedlings in each compartment, they are about 1cm tall at this stage. i've read that some people plant them in clumps anyway without pricking them out individually. i'm wondering what is best in this situation because they have grown so close together that i'd imagine its hard for them to grow anymore without choking each other. any advice is greatly appreciated! tim mackey. ireland.
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