Help! My strawberry seeds have grown, and I need to move them to a bigger container. But, I also need to add more soil... I googled "soil for strawberries" and it said something about clay or something :/ So, what brand do you think is the best for young strawberries? Also, if I planted 6-10 seeds in the same 'cup' do I need to separate them? or leave them as is. Sorry if this is really obvious to you and I'm just a huge waste of space and time :I

*if you know any good soils I would appreciate a link, thanks!*