Phosphorus is one of the most important essential nutrients required by plants, which is absorbed in the form of phosphate. It plays a very significant role in photosynthesis, respiration, energy storage and transfer, and the growth and development processes in plants.

The appropriate level of phosphate in a planted aquarium is, on average (depending on the type of plants), up to 1.5 milligrams per liter. If the amount of phosphate in the aquarium falls below the plants’ needs, their growth will significantly decrease, as it is one of the main limiting factors for plant growth. Symptoms of phosphate deficiency include the appearance of brown spots on the leaves of plants (often on older plants) and, in some cases, the development of green spot algae on the leaves. Typically, deficiency symptoms appear first in older leaves rather than younger ones. On the other hand, high levels of phosphate can become unavailable to plants and, after the growth of unwanted algae in the aquarium, can lead to an imbalance in nutrient availability for the plants, causing them to turn brown and black, which ultimately leads to their death. Additionally, an imbalance between phosphate and nitrate can lead to the proliferation of unwanted algae.

Deep Ocean Phosphate Fertilizer can easily and safely increase the phosphate concentration in plants with quick absorption and completely eliminate the symptoms of phosphate deficiency.

Basic Usage Instructions:

Shake the bottle well before use, then add half a cap (2.5 cc) for every 80 liters of aquarium water once or twice a week or as needed based on symptoms of phosphate deficiency, such as stunted growth along with yellowing of the leaves or dark green color of the plants and dropping of older leaves.

Professional Usage Instructions:

Before use, measure the phosphate level of the aquarium water using the Deep Ocean phosphate test kit.

• Reference 1: Each cc of Deep Ocean phosphate fertilizer can increase phosphate ion concentration by 0.45 ppm in 10 liters.
• Reference 2: 5 cc of Deep Ocean phosphate fertilizer can increase nitrate ion concentration by 0.112 ppm in 200 liters.

Note: Maintaining a relative ratio of 10 parts nitrogen for every 1 part phosphorus leads to stable plant growth without encouraging excessive algae growth, as an imbalance between phosphate and nitrate can cause unwanted algae.

Attention: The provided usage instructions and weekly fertilization schedule represent a general method and average consumption for all planted aquariums. The volume and needs of plants, as well as the types of aquatic organisms in each aquarium, may vary. Therefore, to achieve the best condition for the plants, the amount of fertilization should be tailored to the volume and needs of the planted species in the aquarium. The aquarium manager should adjust the fertilizer dosage up or down based on the growth status, color of the plants, and their visible symptoms. It is evident that excessive fertilization can lead to algae growth, while insufficient fertilization can result in reduced color and growth.

Explanation: Given the very high quality of Deep Ocean phosphate fertilizer and the necessary stability in the production process, it is possible to use a smart calculator to accurately calculate the amount needed for maximum efficiency in the aquarium. Thus, the closer the entered volume of aquarium water is to reality, the more accurate the final consumption amount will be.

Note: The amount calculated in this calculator is defined based on phosphate concentration. To convert this amount to phosphorus, you can use the Deep Ocean application.