We would suggest you buy bleach and stabilizer, at Walmart or Home Depot.
Test your fill water and you will find out if you need calcium carbonate, muriatic acid, or baking soda. All available at Home Depot, Ace, etc.
Thanks I use the tfp method and have really only used bleach and acid for last few years but, this being new plaster is any of the other stuff needed? On well water...pool store said I would needed the TA or soda ash as the new plaster will cause high alkalinity. PB said the opposite so I am not sure what to believe.