Flourish Excel promotes the ferrous state of Iron and is a source of bio available organic carbon.
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ADA Amazonia Light Soil has a lighter appearance and different properties from the conventional Amazonia soil.
Amazonia Light contains less organic compounds and nitrogen which reduces the chance of problems during the initial setup period of an aquarium.
Another feature of Amazonia Light is its natural light brown colour. The standard Amazonia soils are almost black colour due to the black soil used as the base material.
Although this black colour is a proof of rich Humic acid and other organic acids contained in the soil, the constant use of the same colour soil may limit the variation of impressions in aquascape.
To overcome this issue, reddish Aqua Soil-Africana and yellowish Aqua Soil-Malaya were proposed to increase colour variations, but these soils have the problem of insufficient nutrient contents which leads to slower plant growth compared to Amazonia.
Unlike these soils, the Amazonia Light contains a moderate amount of black soil to provide nutrients sufficient for plant growth with its natural light brown colour.
How are Amazonia and Amazonia Light different in properties?
When judging the impact on water quality, the capacity of bringing soil and water pH down and the capacity of reducing carbonate hardness (KH) of water were comparable between these two soils.
The result shows that Amazonia Light also achieves the water conditions suitable for growing ordinary aquatic plants. Subsequently, a comparison of COD (the measurement of organic compounds in water) and ammonium (NH4) (the measurement of nitrogen content) was performed and it was found that both of these parameters were lower in the case where Amazonia Light was used.
The value of phosphoric acid (PO4) was also lower in the case of Amazonia Light. From these results, it is assumed that there will be less chance of cloudy water and algae growth when Amazonia Light is used. This assumption was further supported by the comparative experiment of the two soils for plant growth. In the case of Aqua Soil-Amazonia, the stem plants grew taller with the help of ammonium and phosphoric acid contained in the Amazonia, but at the same time, diatom (brown algae) and green algae grew more rapidly and it caused a temporary slowdown of the growth rate of foreground plants.
On the other hand, in the case where Amazonia Light is used, both the stem plants and foreground plants showed healthy growth without being covered by algae. The density and color of the plant leaves were also sufficient. This difference is possibly due to the fact that the nitrogen source in Amazonia Light is nitric acid (NO3).
As we all know, the history of Nature Aquarium proves that aquatic plants grow healthily on Amazonia substrate with proper care and maintenance. Still, the handling of aquarium in the initial setup period will be easier with Amazonia Light in most cases. The launch of Amazonia Light marks a new era where aquascapers can choose Amazonia and Amazonia Light depending on their aquarium maintenance skills and colour preference.