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A lack of iron results in the leaves turning yellow, which is known as chlorosis. Ferro helps to prevent this problem. If there are fast-growing plants in an aquarium, then there is a good chance of iron deficiency. In that case, it is recommended to add Ferro to prevent problems.
Weekly | 5 ml per 100 litres / 1 fl oz per 160 US gallons raises the Fe-concentration with 0.50 ppm or 0.50 mg/l. Use this recommended dosage weekly to keep the plants healthy and green. |