What to use?

Hey Guys,



I finally got my salifert test kits (Calcium, Magnesium, Alkalinity)



I tested my water last night.



Ammonia-0

Nitrite-0

Nitrate-<5



Mag-1470-1500

Calc-350

KH- 8.9

Alkalinity- 3.19



What chemicals should i purchase to get my calcium and Alkalinty (KH) in the correct areas?



Look like my calcium is a little low so i need something to higher that.



What is the suggested KH and Alkalinity?