DENNERLE Plant Care P Default Title
DENNERLE Plant Care P Default Title
DENNERLE Plant Care P Default Title
DENNERLE Plant Care P Default Title



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Dennerle Plant Care P 250ml liquid solution is a phosphate fertilizer that supplies phosphate (PO4) to heavily planted aquariums.

Phosphate Liquid Fertilizer for Demanding Planted Aquariums
Dennerle Plant Care P is a phosphate fertilizer that supplies phosphate (PO4) to heavily planted aquariums.


Phosphate fertilizer for heavily planted aquaria
For the targeted supply of phosphate (PO4)
For splendid plants and intensely bright colors
High reach due to concentrated active ingredients
Scientifically tested and optimized
Phosphate Macro-nutrient Fertilizer for Planted and Demanding Aquariums

The healthy growth of aquarium plants requires approximately 20 different nutrients, with phosphate being one of the most essential macronutrients. Along with CO2 and light, it is critical in promoting balanced and healthy plant growth. Plants utilize phosphate to construct a range of organic compounds, and it also plays a key role in energy metabolism as ATP (adenosine triphosphate). Furthermore, phosphate is essential for cell membranes and DNA, making it a crucial nutrient. As phosphate is typically scarce in the wild, plants have developed highly efficient methods for enrichment. In normal, planted community aquariums, the addition of phosphate is optional as it is usually present in sufficient or even excessive amounts from fish excretions and food. However, demanding planted aquariums such as aquascaping and Holland aquariums have higher nutrient requirements, especially for macronutrients.

dense planting (more than 70–80% of the bottom surface)
many fast-growing species
plenty of light (30–60 lumen/liter or more)
CO2 fertilization
30–50% partial water changes per week
no or low fish stocking (but with shrimps)
Recognize Phosphate Deficiency in the Aquarium

Phosphate deficiency can quickly occur in these types of aquaria. The plants then stop growing. Shoots remain short, leaves are small and often turn dark green. Some species may also turn purple due to the accumulation of red leaf pigments (anthocyanins).

Remedy Phosphate Deficiency in the Aquarium

Keeping track of phosphate levels and supplementing if necessary is crucial for maintaining a healthy plant aquarium. The nutrient consumption of each individual aquarium varies according to factors such as plant quantity, species, animal stocking, feeding, water changes, and growth conditions. Therefore, the amount of fertilizer required should be determined on an individual basis. For aquariums that require all three macronutrients (N, P, and K), using Dennerle Plant Care NPK is recommended. The nutrient ratios have been carefully chosen to ensure equal absorption by plants without any deficiencies or accumulation of individual nutrients. Maintaining biological balance is essential, as nutrient imbalances can lead to algae problems. In cases where an aquarium requires more phosphate, Dennerle Plant Care P should be used. Regular measuring and dosing of phosphate is recommended. Phosphate is quickly absorbed by plants and can be stored well. In aquariums with phosphate deficiency, adding phosphate initially causes it to disappear quickly from the water. After 7-14 days of regular addition, the measurable phosphate content in the aquarium water increases again. Phosphate can be used to control both plant and algae growth. To make life difficult for unwanted algae, it is recommended to use phosphate as a shock fertilization with 0.1-0.2mg/L. A complete nutrient supply and best possible plant growth can be achieved by using a macronutrient fertilizer in combination with a micronutrient fertilizer and Plant Care Pro. It is also recommended to perform a partial water change of 25-50% per week for magnificent plant growth and healthy fish and shrimp. This helps remove waste and inhibitors and prevents nutrient imbalances.


For precise and accurate dosing of fertilizer, use 2 ml per 100 L to add 0.2 mg/L phosphate. The recommended concentration range for phosphate is 0.1-0.3 mg/L (max. 1 mg/L) to avoid unnecessary algae growth. You can use Plant Care P as a weekly or daily fertilizer.

CoralVue, Inc. and Dennerle hereby guarantee this product to be free from defects in material and workmanship for a period of:

1 Year
Warranty is activated on the date of purchase.

This Standard Limited Warranty applies and is limited as follows:

To the product only as long as it remains in the possession of the original purchaser.
To the product that has not been subject to accident, misuse or abuse.
To the product that has not been modified, altered, defaced, or had repairs made or attempted by other than CoralVue, Inc.
That CoralVue be immediately notified in writing within ten (10) days of first knowledge of defect by owner or his agent.
That CoralVue, Inc. shall be given first opportunity to make any repairs, replacements or corrections to the defective construction within a reasonable period of time.
Under no circumstances shall CoralVue and/or the Manufacturer be liable by virtue of this warranty or otherwise for damage to any person or property whatsoever for any special, indirect, secondary or consequential damages of any nature however arising out of the use or inability to use because of the product defect.
To submit a warranty claim, please visit our CoralVue Support Portal.

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