Yellowing of Aquarium Water with AQUA SOIL AMAZONIA II

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We found out there is a possibility the Aqua Soil Amazonia II, shipped out of our warehouse during the period of April, 2010 to June, 2010, may cause a yellowing of water right after the initial setup. The yellowing of water is caused by humic acid, a natural component of original soil, and it does not affect the growth of aquatic plants or the health of fish. In case of using the Aqua Soil Amazonia II in the planted aquarium tank, the release of humic acid stops after the plant grows and covers the entire substrate, and the problem of water coloring gets resolved. From this reason, it is not necessary to replace the substrate in case of using Amazonia II for the planted aquarium tank.

For customers, having an unused Amazonia II, or those who newly purchased Amazonia II, who cares about water coloring, please kindly check the condition of Aqua Soil Amazonia II, before setting on the aquarium tank.

Procedure of Confirmation
(Please prepare pH reagent or pH meter for measurement.)

1. (1) Place Amazonia II in a plastic or paper disposable cup, about 1/4 of the capacity.


2. (2) Pour the tap water up to the half of capacity, and leave it about 12 hours
   (In case of using pH meter for measuring, it is possible to check the pH value immediately by crumbling the granules of Amazonia II with a spoon, and making it mud water.


3. (3) By measuring pH, and confirm the pH level of test water with Amazonia II dropped from the pH level of tap water, it is no problem to use in the aquarium. In case the pH level does not drop or you experience the yellowing of water, please consult with retailers or our ADA product distributor for replacement.