I am having trouble keeping up my calcium levels. I can't seem to get it above 350 and is now 315. I have been adding liquid calcium supplements per the required dosage on the label but can't seem to get it anywhere near the 400+ level. Can I dose the tank above the recomended dosage on the label in order to achieve the required level and then monitor daily and add as needed? Or should I be using Kalkwasser instead?