I have no experience with that species of paramecium, but I guess it is much too big for young Paros. Normally we use P. caudatum. It is widespread in the world and mostly easy to be raised and fed.
But normally, any rotifiers are preferred to Paramecium since they are soft whereas Paramecium are harder. However, P. caudatum is a good alternative since it could be gained an cultured rather easily (at least in Europe …).