I got the recipe from mgwater.com
Haven't done this yet. Seek opinions.
and here is a page about bicarbonate


https://www.mgwater.com/bicarb.shtml

Recipe for Enriching Water with Magnesium Hydroxide:

FOUR EASY STEPS FOR MAKING THE MAGNESIUM/BICARBONATE DRINKING WATER CALLED "WW", USING MAGNESIUM HYDROXIDE IN "MILK OF MAGNESIA", AND CARBON DIOXIDE IN "CARBONATED WATER"

The chemical formula is Mg(OH)2 + (CO2)2 --> Mg(HCO3)2

Step 1: CHILL COMPLETELY TO REFRIGERATOR TEMPERATURE A 1 LITER BOTTLE OF "FULLY CARBONATED" WATER. Carbonated waters such as "Canada Dry Seltzer" which consist of only water and carbon dioxide (CO2) are suitable. "Club sodas" such as "Schweppes Club Soda" are also suitable; they are carbonated water with a small amount of added sodium.

Step 2: SHAKE WELL A BOTTLE OF PLAIN MILK OF MAGNESIA (MoM), THEN MEASURE OUT AS ACCURATELY AS POSSIBLE 3 TBS (45 ml) AND HAVE IT READY. The plastic measuring cup that comes with the MoM is accurate and ideal for the purpose. Use only plain MoM without flavorings, sweeteners, mineral oil, or other additives. The "active ingredient" should be only magnesium hydroxide (Mg(OH)2), 400 mg per teaspoon (5 ml), and the "inactive ingredient" should be only purified water. 41.7% by weight of magnesium hydroxide is magnesium (Mg), so 1 teaspoon of MoM has 167 mg of Mg, and 1 tablespoon (TBS) has 500 mg of Mg (1 TBS = 15 ml).

Step 3: REMOVE THE BOTTLE OF CARBONATED WATER FROM THE REFRIGERATOR WITHOUT AGITATING IT. REMOVE THE CAP SLOWLY AND CAREFULLY TO MINIMIZE THE LOSS OF CO2. SLOWLY ADD THE PREMEASURED MoM, THEN PROMPTLY REPLACE THE CAP. Next, shake the bottle vigorously for 15 to 30 seconds, making the liquid cloudy. After 1/2 hour or so the liquid will have cleared, and any un-dissolved Mg-hydroxide will have settled to the bottom of the bottle. Again shake the bottle vigorously for 15 to 30 seconds, making the liquid cloudy again. When the liquid again clears all of the Mg hydroxide in the MoM should have reacted with all of the CO2 to become dissolved (ionized) magnesium and bicarbonate. However, if a small amount of un-dissolved Mg hydroxide still remains in the bottom of the bottle as a sediment it may be ignored. This 1 liter of concentrated magnesium bicarbonate water will have 1,500 mg of magnesium and 7,500 mg of bicarbonate. This concentrate must be diluted in order to be "WW".

Step 4: DILUTE THIS CONCENTRATE 11:1 TO MAKE DRINKABLE MAGNESIUM/BICARBONATE WATER (WW). To make 4 liters of WW measure and transfer 1/3 liter of the concentrate (333 ml) into a 4 liter container. Fill the container with 3 2/3 liters of plain, preferably purified water. Or, prepare a single glassful of WW by adding 11 ounces of water to 1 ounce of the concentrate. This drinkable water will have approximately 125 mg of Mg and 625 mg of bicarbonate per liter, at pH ~8.3. Other dilutions of the concentrate may of course be made, if so desired.

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I like the idea of supplementing with magnesium, (as well as all the other minerals) however, I dislike the idea of using carbonated water.

Once in awhile would probably be ok, but too much carbonated water will neutralize stomach acid, food won't be broken down properly, and thus won't be absorbed as they should. This happens to people who drink soda on a regular basis.

The stomach must be acidic (below 2 pH) in order to function properly, whereas the blood should be no lower than 7.365 - 7.4 (slightly alkaline) and the urine should be about 7.2 or more, tested first thing in the morning. A pH of 7.2 is just above neutral, thus is also slightly alkaline.

Without acidosis, there cannot be hypoxia.

I did this about 7 years ago for a few months. Ted has posted about this before as well. I did not see the advantage to it. It just seemed that it was easier for me to take an acid bound magnesium instead.

Most commercial soda water contains some salt and acid derived from sodium, potassium and phosphorus. Aside from that when carbon dioxide mingles with water, it forms a little carbonic acid, making the water a little tart. The body make carbonic acid as one of its numerous pH buffers, so this is not alien to the body. Magnesium is an alkali metal, so the drink itself will most likely be slightly alkaline. Anyway, you are only adding a little to a larger glass of water 1 to 11. As your instructions say, "This drinkable water will have approximately 125 mg of Mg and 625 mg of bicarbonate per liter, at pH ~8.3. " But I question that. I was only getting about 7.9, and water is about 7.5 (I think).

You see why I would rather just take a supplement. If I really feel that I need bicarbonate, I take a quarter teaspoon of baking soda.

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- Jim

Inside every older person is a younger person wondering what the hell happened. -- Cora Harvey Armstrong

I dont see why it would be an issue with stomach acid if you take it between meals. Stomach acid is made on demand isnt it?

Im thinking about cost here. Magnesium as in MOM is so very inexpensive...

lots of folks have problems absorbing magnesium and I though ionized would be perhaps better... and it may help to get folks away from drinking soda pop which is much worse than carbonated water