I would concur with Hedge_Fund's plans, and PRLs in my opinion are about as difficult as regular CRS/CBS, if not slightly easier, since their genes are stronger as a result of having never been mixed with other bee shrimps. They are just pricier. Do not keep your PRL and PBL together otherwise they will no longer be pure.
Also, like the regular CRS/CBS, PRL/PBLs also fit "the higher grade the more fragile".
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