Substrate Additive and Clay Balls

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

1. When does Terrdrakon substrate have to be replaced?

A distinction should be made between two functions of the substrate:

The direct fertilizing function of the clay and the added trace elements should be between 1 and 3 years depending on the granularity of the substrate and the degree of through-flow (floor heating).

After this time, the effect can be occasionally replenished with Terrdrakon NPK/SE balls aquamax.

The improvement in a substrate generally consisting just of quartz gravel or sand with clay to a substrate which is much better for plants is retained even after this time.
Clay minerals (layered alumosilicates) have a similar function to ion exchangers and buffer various fertilizer substances, i.e. in the case of a surplus they absorb them and release them again as required and thus lead to a long-term improvement in the function of the soil.

A regular replacement of the substrate due to depletion of the Terrdrakon substrate is therefore unnecessary in our opinion and need only be carried out if there are other reasons for re-fitting the pool.

2. Why is so little Terrdrakon required compared to other manufacturers?

Terrdrakon contains the pure, concentrated active ingredient.
It is not previously mixed with gravel or sand, as is often the case with other manufacturers and for this reason a lot less is required.

3. How long do the clay balls last? How often do I have to add more fertilizer?

A distinction should be made between two functions of the balls:

The direct fertilizing function of the clay and of the NPK fertilizer it contains should last between 3 and 6 months, depending on the exact positioning of the balls (depth in the substrate, granularity of the substrate).

After this time, large solitary plants require 1 - 2 new balls, but not more than 3 - 4 balls per 100 l pool volume.

The improvement in a substrate generally consisting just of quartz gravel or sand with clay to a substrate which is much better for plants is retained even after this time.
Clay minerals (layered alumosilicates) have a similar function to ion exchangers and buffer various fertilizer substances, i.e. in the case of a surplus they absorb them and release them again as required and thus lead to a long-term improvement in the function of the soil.