Phosphates in pond water
PO4, phosphorus or P for short, occurs naturally in water because it is contained in many types of rock and soil. When rainwater flows over these rocks and soils, phosphates can be released and dissolved into the water. This process is known as weathering.
In addition, human activities such as agriculture, wastewater disposal and industrial processes contribute to phosphate pollution of water resources by releasing phosphates from fertilisers, wastewater and other sources into water bodies.
Phosphates in water can promote the growth of algae and other aquatic plants, which can lead to problems such as excessive algal blooms and eutrophication that can affect water quality. Underwater biodiversity also suffers and not all living organisms survive high phosphate levels.
The phosphorus cycle in the garden pond, natural pool, swimming pond
is a natural process in which phosphorus (P) is moved through various environmental compartments such as soil, water, plants and organisms. Similar to other nutrient cycles such as the carbon and nitrogen cycles, the phosphorus cycle is essential for the functioning of ecosystems.
Phosphorus is a crucial element for life
Phosphates play an important role in processes such as photosynthesis, energy transfer and DNA synthesis. The phosphorus cycle includes processes such as the weathering of rocks, erosion, uptake by plants, consumption by animals, decomposition and sedimentation. It is important for maintaining the fertility of soils and the health of aquatic ecosystems.
Phosphorus (P) is also crucial for living organisms in water. In aquatic ecosystems, phosphorus fulfils similar vital functions as on land.
- Component of DNA and RNA: Phosphorus is also an essential component of DNA and RNA in aquatic organisms, which means that it is essential for genetic information storage and transmission.
- Energy metabolism: Aquatic organisms, including microorganisms, plants and animals, use ATP as an energy source for vital processes such as movement, growth and reproduction. Without phosphorus, these processes could not run efficiently.
- Cell membranes and structures: Phospholipids are also important components of cell membranes in aquatic organisms. These membranes are crucial for regulating the exchange of substances and protecting the cell from its environment.
- Regulation of metabolic processes: Phosphorus is also involved in the regulation of various metabolic processes in aquatic organisms, including the activation of enzymes and the transmission of signals between cells. Overall, phosphorus is just as crucial to life in aquatic ecosystems as it is on land, as it supports fundamental biological processes and enables organisms to survive and thrive in their environment.
"Without water there is no life" Image credit: Joujou / pixelio.de
Phosphorus compounds in garden ponds, natural ponds
In natural ponds there is usually only
a small amount of inorganic phosphorus compounds compared to nitrogen
nitrogen, which is mainly present as nitrate, nitrite and ammonium.
is present. Despite this small amount, phosphorus is an essential nutrient for
primary producers in water bodies, such as algae and higher aquatic plants.
aquatic plants. Dissolved phosphates in the water can therefore become a
limiting factor in the pond than nitrogen.
If there is an excess of dissolved phosphate due to over-fertilisation or re-dissolution from the sediment, algae can absorb up to ten times more phosphate than normal. This leads to a massive proliferation of algae, known as the
known as the dreaded algal bloom among pond owners, and the biological
balance in the pond begins to falter.
Phosphates in swimming ponds
Green algae and filamentous algae can quickly develop in swimming ponds and natural pools if there is a maintenance backlog. Even the pool robot, e.g. the Dolphin Bio S as a tank among the pool robots, reaches its limits. The only solution here is manual cleaning with a sludge vacuum cleaner and the removal of sediment, including the removal of the water. algae to get the phosphate value back into the normal range (phosphate <0.03 mg/l).
Algae and higher aquatic plants mainly absorb the inorganically dissolved dissolved phosphate PO4 from the water and integrate it into the food food chain. Just 1 g of phosphate in the water is enough to cause 10 kg of algae to grow.
In closed systems such as a garden pond without inlet
and drainage, phosphate mainly enters the water from over-fertilised garden areas
around the pond, e.g. by washing in lawn fertiliser during heavy rainfall.
Alternatively, phosphate can also be released through the
decomposition of food residues, dead animals and plant parts.
are released. Phosphate exists in water in three different forms
forms: as dissolved inorganic phosphate (orthophosphate), as organically dissolved
organically dissolved polyphosphate and as phosphate bound to particulate biomass
bound to particulate biomass in detritus and in organisms.
Phosphate in biotopes, natural ponds
When plants and animals die and sink to the bottom of the pond
sink to the bottom of the pond, only a part of the bound phosphate reaches the
pond sediment. Most of the phosphate released is returned to the water as
dissolved phosphate by plants and animals back into the water
and immediately absorbed by the primary producers.
The amount of iron (Fe) and dissolved oxygen (O2) in the lower layers of water and
water layers and in the pond sediment influences the effect of the
sinking phosphate. If sufficient dissolved oxygen is present
phosphate accumulates on sediment particles or precipitates as insoluble
insoluble iron (III) hydroxyphosphate.
When oxygen-free zones form in the pond sediment and digested sludge
the reduction of trivalent iron (Fe3) to divalent iron (Fe2) takes place.
divalent iron (Fe2), whereby the phosphate is released again. Even at this stage, the phosphate does not directly reach the open water
the open water zone of the pond.
The water, which is directly above the
pond sediment and still contains a few milligrams of dissolved oxygen
forms a kind of barrier through the upper sediment layer. This draws the released phosphate ions back into the sediment.
drawn back into the sediment.
Remobilisation of the phosphate only occurs at an oxygen
oxygen saturation of less than 10%. If the oxygen content drops
below <5 mg per litre, an explosive release occurs and the dreaded
release and the dreaded mass proliferation of algae.
Even if there is sufficient oxygen in the lower water layers
is present, the phosphate is only prevented from escaping from the pond sediment
into the open water if mulm, detritus and sludge are not stirred up.
are not stirred up. This is particularly important, as the rummaging of the pond floor
by fish such as tench, goldfish and koi in search of food can lead to
can lead to increased problems.
Phosphate remover, phosphate binder
A distinction is made between liquid binders - PO4 phosphate binders, phosphate removers, mostly based on lanthanum, a chemical element of the transition metals.
Solid binders, phosphate binders (PhosFort, PhosSorb, PhosBinder, etc.) are mineral phosphates, binding granulates mostly based on hard chemicals, bentonite, zeolite as well as iron compounds and iron oxide.
Sogenante Phosphate binden - Algen entfernen products, Turbo PhosphatBinder guarantee the rapid reduction of extremely high nutrient concentrations. The turbo phosphate agents reduce algae-favouring phosphates in the pond water to a healthy level and effectively prevent algae infestation. These advertising claims also apply to the frequent use of so-called hard chemicals.
Most common application: The phosphate binder is spread on the surface of the water, the water turns milky shortly afterwards. The next day the whole bottom is white and the pond needs to be cleaned.
The prerequisites for the success of phosphate binders are a filter system and no sources of phosphate, e.g. of groundwater, spring water or surface water.
Note: Phosphate removers and phosphate binders may exceed the toxic limit for living organisms, including water. microorganisms in the water can be reached quickly and the lower limit for survival can be reached.
Tip & conclusion:
We recommend manual pond cleaning with a sludge vacuum cleaner, pool robots to remove bound nutrients such as algae and sediment from the water in a natural way, as well as natural algae control with effective clicks.
If the phosphate values are in the
normal range (< 0.3mg/L), the algae can be kept in check with the
intelligent G-Sonic click technology "click by click clear water". Even existing algae die naturally without the use of chemicals thanks to the resonance vibrations generated.
The G-Sonic algae-free devices are available for ponds from 5 metres long and at least 50 cm deep. Further information about the environmentally friendly algae control method.
Tip
PO4 Phosphate sensitive quick test from range 0.02 - 1.8 mg/l
€19.50*
The phosphate test set measures the smallest amounts of phosphates in water (tap water, groundwater, pond water) in the following gradations: 0,02 / 0,05 / 0,1 / 0,2 / 0,4 / 0,6 / 0,8 / 1,2 / 1,8 mg/l It is very easy to use and the results are visible within 10 minutes. Highly sensitive test (from 0.05 mg/l) for laboratory-accurate measurement in fresh and salt water. Determines the phosphate content of the water, which together with the other water values is responsible for unwanted algae growth. Sufficient for approx. 50 measurements Including:Glass cuvettesComparator system Syringe Colour chart Produktinformationen (PDF)Delivery note:Please note this product an due to safety regulations on be delivered within Europe
PO4 Phosphatbinder - 2.5 Liter
€75.00*
PO4 Phosphatbinder 2.5 Liter
Zur Wasserpflege verbindet sich der PO4 Phosphatbinder mit den im Wasser enthaltenen Nährstoffen und sorgt für klares Wasser. Bei dem Algenmittel werden dabei Trübstoffe gefällt. Die Anwendung ist PH-Neutral und bei einem Ersteinsatz entsteht meistens eine kurzzeitige Trübung, welches schnell durch die Filteranlage ausgefiltert werden kann. Ansonsten setzen sich die Trübstoffe auf den Boden für die manuell Reinigung.
Die Methode zur Wasserpflege ist temporär einsetzbar bei einer Neubefüllung oder Nachspeisung. Die Anwendung im Wasser reizt weder die Haut noch Schleimhäute und hat keinen Einfluß auf die Oberflächenspannung und ideal für Personen, die untere einer Chlorallergie leiden.
Bei einer Überdosierung können Wasserpflanzen und Mikroorganismen leiden, sowie eine stärkere Schwankung des pH Wertes. Bei Fischbesatz von Stören und Orfen nicht zu empfehlen, ansonsten keine Auswirkungen bekannt bei anderen Fischarten oder Amphibien.
Empfehlung:
Bei einer Erstfüllung von phosphathaltigem Leitungs- oder Brunnenwasser einzusetzen um die Phosphat-Nährstoffe aus dem Wasser zu ziehen. Weitere Informationen zu Phosphate im Teich-Wasser.
Dossierung:
Neubefüllung 25-50 ml Phosphatbinder pro m³ Wasser
Folgedosierung 15-30 ml je 10 m³ wöchentlich
Sichheitshinweise:
Enthält Lanthanchlorid, eine Überdossierung ist unbedingt zu vermeiden
Klares Wasser bei Algen im Teich
Mit der intelligenten Klicktechnologie können alle heimischen Algen, Schwebealgen, Blau-, Faden- und Grünalgen umweltschonend bekämpft werden. Die natürliche Klickton Methode ist gegen alle Algenarten im Biotop, Teich oder Schwimmteich und lässt die Vakuole der Algenzelle, durch die hochpräzisen Klicktöne, reissen. Fortlaufende Chemikalien und weitere Teichwasserzusätze entfallen in der Regel.