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Frequently Asked Questions - FAQ

You ask. We answer.

If you have a question which is not answered here in this FAQ, please contact us.

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Close-up of lush, colourful aquatic plants in an aquarium with green, red and purple hues against a dark background.

Substrate Additive and Clay Balls

Shelf life and required amount of Terrdrakon substrate and Terrdrakon NPK resp. SE clay balls

FAQ
Close-up of an aquarium with green vegetation, red plants and two fish. A small fish swims in the foreground. Bubbles are rising.

Water plant fertilizer

Our fertilizers Ferrdrakon, Ferrdrakon K, Daydrakon, KramerDrak and Eudrakon N/P

FAQ
Close-up of a water lotus with brown-red leaves and green grasses on dark gravel. Green aquatic plants in the background.

Water Conditioner

Our water conditioners Aquadrakon Black, Aquadrakon EL and Visidrakon

FAQ

Substrate Additive and Clay Balls

Shelf life and required amount of Terrdrakon substrate and Terrdrakon NPK resp. SE clay balls

Uniform, light grey colour surface with no recognisable structures or patterns. Plain, matt background in a neutral shade of grey.
  • When does Terrdrakon substrate have to be replaced?
  • Why is so little Terrdrakon required compared to other manufacturers?
  • How long do the clay balls last? How often do I have to add more fertilizer?

Water plant fertilizer

Our fertilizers Ferrdrakon, Ferrdrakon K, Daydrakon, KramerDrak and Eudrakon N/P

Uniform, light grey colour surface with no recognisable structures or patterns. Plain, matt background in a neutral shade of grey.
  • Other manufacturers recommend a different iron content?
  • The fertilizer turns black!
  • The colour of the self-mixed solution
  • Mixing and diluting?
  • Phosphate consumption too high?
  • Adding fertilizer in the morning or in the evening?
  • Shipping in winter
  • How long can the fertilizer powder be kept?
  • How long can the fertilizer solutions be kept?
  • How can one dissolve the refill packages best?
  • How much does a portion of fertilizer powder weigh?
  • Invertebrates and copper

Water Conditioner

Our water conditioners Aquadrakon Black, Aquadrakon EL and Visidrakon

Uniform, light grey colour surface with no recognisable structures or patterns. Plain, matt background in a neutral shade of grey.
  • Aquadrakon Black and pH
  • Differences between Aquadrakon Black and Aquadrakon EL?
  • How long can Aquadrakon Black be kept?