Scape K and Trace was developed to supply Potassium and Trace Elements to the aquarium plants in the correct quantity. By adding one pump (approximately 1ml) of Scape K and Trace per 50L of aquarium water on a daily basis, you will be supplying enough Potassium and Trace Elements for your aquarium plants. Potassium is one of the most used Elements in a planted aquarium. It is thus vital to add it to the aquarium. By combining Potassium and Trace Elements into one easy to use bottle, This product will save you time as well as money. POTASSIUM DEFICIENCY Pinholes will form in the leaf. These holes will gradually become bigger, and a yellowing area on the leaf will surround them. TRACE ELEMENT DEFICIENCY: Twisted, Pale growth (Calcium), yellow new growth (Iron), dark leaf veins and light leaf colour (Magnesium). To counter these problems, one should immediately carry out a 50% water change, ensuring that you remove the dead leaf matter from the bottom of the aquarium. Once the aquarium is filled again, you can begin dosing Scape K and Trace as per the instructions on the bottle.