Oceanlife GH Calculator 1.0

Perform the calculation of the desired GH

This software allows you to calculate the amount of GH+, GH+Mag and any water change necessary to achieve a desired GH, with the right calcium/magnesium ratio, starting from a water containing only calcium.

Value of GH in water (test): dGH
Desired GH value: dGH


Net tank volume: liters




Amount of current calcium: mg/l (ppm)
To obtain the desired GH, perform a water change with osmotic water of: liters
Quantity to be entered of GH+ : ml
Quantity to be entered of GH+ Mag: ml
Final calcium concentration: mg/l (ppm)
Final magnesium concentration: mg/l (ppm)