I did this too since I had an old 2.85L jug, and am used to adding the required amount of 6% bleach.
But I already have a 30 lb container of 48% cal hypo I wanna pass (first time homeowner and pool owner, bought cal hypo at start of season before discovering bbb) so from the pool calc I figured out I need about ~370g of the stuff to make a 2.85L jug's worth of 6% concentration.
Basically I like it like that, just so its pre-dissolved. I will still be using regular bleach on and off along side this until the cal hypo's done to not have the calcium go through the roof.