An accurate level of carbonate hardness is essential for stabilizing pH levels as sudden drop of carbonate concentrations in the tank may entirely stop the nitrification process. Aquaforest KH buffer is used for maintaining constant carbonate hardness levels in reef aquariums. Recommended level of KH in reef aquaria is 6,5-8,5 dKH.
Dosage: 
dissolve 80 g of KH Buffer in 1000 ml RODI water. 
Dosage should be determined by your water test results and coral’s daily consumption. 
Before applying KH Buffer solution into the water, it is recommended to run a water test to check current water parameters. 
100 ml of KH Buffer solution raises KH level in 100 l (27 US gal) of water by 2,6 dKH.
We recommend using a dosing pump to dose Aquaforest KH Buffer slowly throughout the day.
The product is also suitable for casual use for one-time KH level raising.
10 g of KH Buffer in 100 l of water raises the KH level by about 3,3 dKH (Alk. 1,18 meg/l). 
We do not recommend raising KH level by more than 0,5 dKH per day.
What’s great about this product?
Maintains constant carbonate hardness level
Dissolves quickly & easy to dose
Stabilizes water parameters
Crucial for corals health
Good to know:
Recommended level: 6,5-8,0 dKH
Maximum daily increase: 0,5 dKH