Cheap way to make supplements

Calcium - Two cups of driveway heat/calcium chloride into a one gallon bucket and your solution is ready. For detailed information and calcium recipe I suggest you go This site is awesome and has step by step instruction on DIY supplements.

Magnesium - Pure Epsom Salt from the Grocery store. For detailed information and magnesium recipe I suggest you go

Kalkwasser - One tsp of Ms. Wages pickling lime to about a gallon of water and let it drip into your sump over night.