John,
Welcome to the forum.
You need to give us those numbers so we can advise you. Also pool size in gallons, type, above ground or in ground, concrete or vinyl, pump size, type of filter - DE - Sand - or Cartridge.
Get yourself a decent testkit as well, that can meaure up to 15 ppm Cl. You might have to get that from the pool store. Just don't ask for any more advice, or sales talk.
The one thing your dealer did not mention was to use chlorine, which you are going to need as soon as possible. About a quart for every thousand gallons to bring the Cl up to 15 ppm.
If there is any debris on the bottom or in the skimmer or pump basket, it needs to be removed as well, as this will eat up your Cl.
You are correct in that Borax will bring up your pH, it does it better than soda ash and as you say is lot cheaper. Baking Soda will raise your alkilinity. Once you start your own testing, you will only have to go to the pool store for stabilizer (CYA), and nothing else. Hold off on adding any chemicals, other than the chlorine, until we get some numbers from you.
Hope this helps.
Pat
PS. Just saw your numbers. Carry on with the Cl addition, don't add any more Muriatic acid. The Cl will bring the pH up by itself. Forget a out the 36lbs of hardness plus. You can add shock which will help your chlorine and add calcium. If you have a vinyl pool, then about 120 ppm CH is all you need. With a concrete pool, 200 - 400 ppm should be your goal.
Hope this helps for now.
Pat
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