Magnezyum Sülfat (MgSO4) elde edilip edilmiyor musunuz?
Hi John q 3 times a week npk potassium sulfate 6ppm KNO3+urea 6ppm postium phosphate 1.8ppm I do 50 percent water change weekly, my tank is 75 liters mg and ca, I don't know this. I don't have a test kit for ro water mineralization and it doesn't say how many mg and ca ppm it is, I ordered aqua forest gh/khCool.
So simply add some MgSo4 to the tank. There's plenty of us here that can do the calcs if need, just tell us the tank size and how much water you charge per week.
Might also be helpful if you let us know what other fertilizer you add to the tank, npk, ca and mg if you know.