This applies to the coloured solutions KramerDrak, Ferrdrakon, Ferrdrakon K and Daydrakon.

You have just made the fertiliser solution from the refill powder according to the instructions.
However, the colour of the solution is much lighter than the ready-made solution previously purchased and ask yourself:

Have I received too little powder or the wrong powder?

To make a stable, non-caking or perishable refill powder, it is necessary in some cases to use different chemicals for ready-made solutions (however, the specified and guaranteed active agents are always contained in the same quantities).

The pH value of the self-made solutions may therefore be slightly different, and the solutions hardly had time to absorb oxygen from the environment, for example, when freshly mixed.

For this reason, the solutions freshly made from the refill powders are at first very light in colour, but they darken slightly over time, even if they do not usually become as dark as the ready-made solutions.