Malawi/Victoria Buffer effect on KH and GH

[cpn]

I would like to know how Malawi/Victoria Buffer would affect the Total Hardness (GH) and Alkaline Hardness (KH). May I know the degree of GH and KH increase per gram of buffer added to each litre of water.

Also, does the buffer contain any sodium, phosphate, and nitrate?

I am planning to use the buffer in a Sulawesi shrimp only tank to raise the pH to about 8.2. Is there any component in the buffer I should be concern of? Do you have other products which may be more suitable.

Many Thanks.