Water Hardener

Area of Application

Duradrakon - General hardening of reverse osmosis water where there is a CO2 system, or where there is external water preparation with the lowest possible addition of total salts

Duradrakon M - For Malawi basins and for the easy two-component hardening of reverse osmosis water with only slightly increased addition of total salts

Duradrakon T - Special salt mixture to create the water values of Lake Tanganyika

Duradrakon

Hardening Salt Mixture for Reverse Osmosis Water - Improved Concentrated Recipe!

This hardening salt mixture is suitable only for Aquarium water with adequate free CO2 (preferred is when the CO2 is produced by a controlled CO2 system) and where there is a pH-value wide under 7 (preferred RO - as well as DM-water), because otherwise some components only disperse slowly or not at all!
Further...
 

Duradrakon T

Hardening Salt Mixture for Tanganyika Cichlids

Introduction

In almost all fresh-water areas of the earth the calcium content is clearly higher than the magnesium content. This limits the pH-value increasing even by higher carbonate hardness, because from a pH-value of 8.5 to 9 calcium carbonate (lime) begins to solidify out and in this process limits the further increase of the pH-value.
In Lake Tanganyika there is however 4-times more magnesium as calcium in soluble form (considered as a mole fraction, almost 6-times as much). Because magnesium carbonate begins only first with a pH-value far above 9.5 - 10 to solidify, it means there is almost nothing being down to limit the rise of the pH-value above 9.
Further...
 

Duradrakon M

Hardening Salt Mixture for Malawi-Cichlids

Introduction

As the water analysis shows, the water from Lake Malawi is relatively soft. What particularly distinguishes this water is that there is almost no dissolved CO2, and that it consequently has a high pH-value.
Further...