SKU: 30886232122
cheap aquarium plant fertilizer

cheap aquarium plant fertilizer Dennerle Plant Care P

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Description

cheap aquarium plant fertilizer Dennerle Plant Care PAquarium plants need around 20 different nutrients to grow healthily. Phosphate is particularly important. Phosphate is a macronutrient. Along with light and CO 2 , it is one of the most important requirements for balanced, healthy plant growth. What is phosphate needed for in the aquarium? Plants need phosphate to build numerous organic compounds. It plays a central role in energy metabolism (as ATP = adenosine triphosphate). It is also an essential

Aquarium plants need around 20 different nutrients to grow healthily. Phosphate is particularly important. Phosphate is a macronutrient. Along with light and CO 2 , it is one of the most important requirements for balanced, healthy plant growth.

What is phosphate needed for in the aquarium?

Plants need phosphate to build numerous organic compounds. It plays a central role in energy metabolism (as ATP = adenosine triphosphate). It is also an essential component of cell membranes and the genetic material DNA. Since phosphate is usually in short supply in the wild, plants have developed highly effective enrichment methods. The nutrient can be stored in the plant cells and remobilized when needed. The addition of phosphate is not necessary in normal, planted community aquariums, as it usually enters the aquarium in sufficient or often even excessive amounts via the food and fish excrement. In the case of demanding plant aquariums (e.g. aquascaping aquariums, Holland aquariums), however, the situation is different. They have an above-average nutrient requirement, especially for macronutrients. Such plant aquariums are characterized by

  • dense planting (more than 70 – 80 % of the soil surface)
  • many fast-growing species
  • lots of light (30 – 60 lumens/liter or more)
  • CO 2 fertilization
  • 30 – 50 % partial water change per week
  • no or little fish stock (but with shrimp)

Detecting Phosphate Deficiency in the Aquarium

In these types of aquariums, a phosphate deficiency can quickly occur. The plants then stop growing. The shoots remain short, the leaves are small and often turn dark green. Some species can also turn purple due to the accumulation of red leaf pigments (anthocyanins).

Resolving Phosphate Deficiency in the Aquarium

For demanding plant aquariums, it is therefore very sensible to keep an eye on the phosphate content and top it up if necessary. Each aquarium has a specific nutrient consumption depending on the number of plants, type of plant, animal population, feeding, water changes and growth conditions (amount of light, lighting time, CO2 addition, filter technology, etc.). The amount of fertilizer required should therefore be determined individually for each aquarium. If the aquarium needs all three macronutrients N, P and K, the use of Dennerle Plant Care NPK is recommended. The nutrient ratios have been chosen so that all macronutrients are absorbed by the plants in equal proportions. Even with long-term, regular use, deficiencies or disadvantageous accumulations of individual nutrients cannot occur. Biological balance is particularly important with macronutrients, i.e. the nutrients should always be present in a certain ratio to one another. Nutrient imbalances should be avoided as they usually lead to algae problems. Under certain circumstances, the aquarium may have a specific need for phosphate. There are also tap waters that contain enough nitrogen and potassium, but too little phosphate. In these cases, Dennerle Plant Care P should be used to supply the plants with phosphate in a targeted manner. We recommend measuring the phosphate content regularly and dosing Plant Care P accordingly. Phosphate can be measured precisely and reliably using aquarium tests. Phosphate is absorbed very quickly by the plants and can be stored well. In aquariums that have been undersupplied with phosphate for a long time, this means that the added phosphate initially "disappears" from the water again. After around 7 - 14 days of regular addition, when the plants have filled their phosphate stores again, the measurable phosphate content in the aquarium water then increases again. At this point, the amount of phosphate added should be reduced accordingly. Phosphate is a real growth engine, both for aquatic plants and for algae. Phosphate can therefore be used to control both plant growth and algae growth. It has proven useful to use phosphate as a shock fertilization with 0.1 - 0.2 mg/L. You then only fertilize again when the phosphate content has been at zero for a few days. Aquatic plants can store phosphate better than algae. This method can be used to make life difficult for the unwanted algae. While the plants feed themselves from their internal phosphate stores and continue to grow in "phosphate-poor times", the algae "starve" and their growth is thus significantly slowed. A macronutrient fertilizer must always be used in combination with a micronutrient fertilizer (complete iron fertilizer). For a complete supply of nutrients and the best possible plant growth, we recommend combining it with Plant Care Pro . For magnificent plant growth and healthy fish and shrimp, we recommend a partial water change of 25% to 50% per week. This removes waste and inhibitors and prevents nutrient imbalances.

dosage

The fertilizer can be dosed precisely and accurately: 2 ml per 100 L adds 0.2 mg/L phosphate. The recommended concentration is in the range of 0.1 - 0.3 mg/L phosphate (max. 1 mg/L). Higher levels are rarely necessary, they usually just unnecessarily encourage algae growth. Plant Care P can be used as a weekly fertilizer or daily fertilizer.

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Jennifer Kuhns
Lowell, US
★★★★★ 4
Soft...but fluffy and tall
Color: White, Size: Standard (Pack of 2)
I've only had these pillows for about a week. They are a great quality pillow. The cover is soft and seems well made. My only complaint is that they are VERY full pillows. If you're tall with broader shoulders, you'll probably love them. If you're shorter with a smaller frame you will probably feel like your head is too high and your neck at a weird angle (my problem). There seemed to be mixed reviews about softness....I would consider these a nice medium pillow. Soft filling but firm enough that your head doesn't sink to the bed. Definitely NOT a down-like pillow, so if that's what you're looking for, this is not for you.
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Reviewed in the United States on April 10, 2026
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Maria Fernanda Rojas Mejia
Houston, US
★★★★★ 5
Soft, fluffy and surprisingly comfortable
Color: White, Size: Queen (Pack of 2), Color: White, Size: Queen (Pack of 2)
I really liked these pillows. I tried to show different things in my photos because I wanted people to see the details: the design, how fluffy they are, and how full and thick they actually look. They are so full that the pillowcase even looks tight once you put it on, which I actually loved because they look luxurious and well-filled. At first glance they look very thick and high, but once you lay down they feel soft and fluffy instead of hard. They adjust comfortably and feel very cozy whether you’re sleeping, relaxing, or even reading before bed. I think they offer a really good balance because they feel supportive without being stiff. Of course, pillow preference is very personal—some people like lower pillows and others like higher ones—but for someone who likes fuller pillows that are still soft and comfortable, these are great. They are spacious, cozy, and feel like a very good purchase overall. I honestly don’t have any complaints so far. Definitely happy with them.
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Reviewed in the United States on May 15, 2026
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Chelsea, US
★★★★★ 5
Great quality pillows. Very difficult wrapping.
Color: White, Size: King (Pack of 2)
The Pillows are the real deal. Very fluffy but with good support. I was surprised by the weight of the box they came in, pretty heavy so you know there’s good quality pillows inside. The one negative is that the pillows are packed in very very tight plastic because they come compressed. But the thing is, it’s really a chore to open them. You have to be careful not to cut through the plastic to the material, but the plastic is put on so incredibly tight that it’s even hard to get your finger underneath. But I found a way to open them. Near the top, insert A very flat metal ruler as far in as you could get it. Then cut through the plastic that’s above the metal ruler. That prevents a sharp tool from damaging the pillows. As you get through the plastic above the ruler, keep pushing the ruler further down into the package. Believe me, this simplifies what could be a very difficult unpacking. I am very surprised that the company that makes them does not insert the type of opener that you find on boxes you receive in the mail or even packages that you get from the grocery store where you just pull a tab and that opens the package. These are really good pillows, but you must be very careful about using a sharp object when opening the box and when trying to cut through the plastic. I am a strong man and have the tools needed, a very flat metal ruler, and a box cutter, knife, or razor. Good luck. !!
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Reviewed in the United States on May 5, 2026
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Starr Charles
New York, US
★★★★★ 5
These hold up very well
Color: White, Size: Standard (Pack of 2)
I have NO luck with pillows. I’ve been in stores & tried them. They seemed ok there. At home, nope. I’ve been getting headaches & neck aches from lousy pillows. I’ll change one, a few nights relief. It doesn’t help that I’m prone to headaches. After reading about different pillows, I settled on these. The reviews were better than so many different ones I was looking at. Including high priced & brand names. I bought the standard size. When I saw, “Customers Usually Keep This”, I kept my fingers crossed. When I received them, I took one out of the package & put my head on it & thought, oh no! This is too hard! I tried it again. Ok….. I slept on it & haven’t had any pains since. It’s soft but firm enough to keep my head from sinking & messing up my neck. I don’t move. No more flipping my pillow over. My head doesn’t go below my neck anymore! This has been 2 months now, but it hasn’t changed at all. I wake up happy, not complaining. No more pains or headaches. This saved me from losing days with a heating pad or an ice pack. The price was excellent for 2 pillows. I can’t believe a blind buy was the answer! These are incredible. Finally, something worked for me.
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Reviewed in the United States on May 13, 2026
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Xander King
Bozeman, US
★★★★★ 5
Awesome Pillows!
Color: White, Size: King (Pack of 2)
These pillows are super soft! I love them. I bought them when I caught a bad cold and needed to prop myself up. Worked so great! Definitely give these pillows a try. They're very reasonably priced too.
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Reviewed in the United States on May 29, 2026

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