This product contains a mixture of various minerals and microorganisms. These cause the growth of algae to stop and disappear completely after approx. 4 weeks. The added organisms break down the decomposed algae on a natural basis (please do not confuse this with bacteria that are supposed to break down sludge). The algae do not die suddenly, so the filter does not become completely dirty, as is the case with other algae control products. Fadenalgenstop comes in a fabric bag that you simply hang in the water flow (filter, stream). 

The effect can last up to 4 months and depends on water changes and UV radiation. (The manufacturer recommends switching off the UV lamp so that the microorganisms are not damaged). If you notice a decrease in effectiveness, replace the bag with a new one. Always use all the bags in the packaging at the same time.

Active ingredient: 1N-(1,1-dimethylethyl)-N-ethyl-6-(methylthio)-1,3,5-trazine- 2,4-diamine (6.40 mg/kg)
Labelling in accordance with EU Directive 98/8 EC: Use algicides safely! Always read the label and product information before use. Baua Reg. No. N-74833

Fadenalgenstop is completely harmless to your fish, but can reduce the growth of water lilies and plants. If your plants are important to you, you should not use this product and switch to one of our other thread algae treatments.  

Do you have questions about pond supplies and technology?
We are available for you!
Monday to Friday: 9 a.m. to 5 p.m.

Please hang the number of fabric bags required for your pond size in the current (filter, stream). The packaging units are calculated for the specified pond volumes. Always use all bags in the packaging units at the same time. If you do not have a current in your pond, you can also spread the product on the pond surface with a watering can. Slight overdoses are harmless and are even recommended in cases of heavy algae growth.

If there are water lilies in the pond, the following dosage instructions apply:
Add the amount required for your water volume in 3 portions at intervals of approx. 8 days each to avoid rare damage to the water lilies.

Example with water lilies: Pond volume: 10,000 litres Recommended dose: 150 g
Day 1: 50 g
Day 8: 50 g
Day 15: 50 g

Natural, living, non-genetically modified microorganisms

Free shipping on orders over €100

KOI Company Quality Promise

Expert advice from a specialist

Discover
That could be You may also be interested in

Up-sells

Pond Bio (Pond Repair)
1-3 days
Star
Star
Star
Star
Star
Star

Average rating of 4.8 out of 5 stars

Pond Bio (Pond Repair)

Variants from: 1

from €16.47*
tip
Star
Star
Star
Star
Star
Star

Average rating of 4.8 out of 5 stars

Montmorillonite (clay mineral)

Variants from: 2.5

from €27.60*
tip
Star
Star
Star
Star
Star
Star

Average rating of 4.8 out of 5 stars

Anarex-Bio®

Variants from: 1

from €10.80*
12 %
Star
Star
Star
Star
Star
Star

Average rating of 4.2 out of 5 stars

AquaForte Professional Pond Heater Stainless Steel 1kW - 3kW

from €175.12*
tip
Star
Star
Star
Star
Star
Star

Average rating of 4.8 out of 5 stars

Anarex-Bio® Koi Humic Acid

Variants from: 1

from €10.60*
tip
Star
Star
Star
Star
Star
Star

Average rating of 4.8 out of 5 stars

Anarex-Bio®

Variants from: 1

from €10.80*
%
tip
Star
Star
Star
Star
Star
Star

Average rating of 4.7 out of 5 stars

Free of filamentous algae F

Variants from: 1

from €17.37*
12 %
Star
Star
Star
Star
Star
Star

Average rating of 4.2 out of 5 stars

AquaForte Professional Pond Heater Stainless Steel 1kW - 3kW

from €175.12*
tip
Star
Star
Star
Star
Star
Star

Average rating of 4.8 out of 5 stars

Anarex-Bio®

Variants from: 1

from €10.80*
tip
Star
Star
Star
Star
Star
Star

Average rating of 4.8 out of 5 stars

Anarex-Bio® Koi Humic Acid

Variants from: 1

from €10.60*
Star
Star
Star
Star
Star

Average rating of 5 out of 5 stars

Malamix17®

Variants from: 1

from €33.95*
tip
Star
Star
Star
Star
Star
Star

Average rating of 4.9 out of 5 stars

Oishii® Balance - sinking

Variants from: 1

from €11.30*
15 %
tip
Star
Star
Star
Star
Star
Star

Average rating of 4.7 out of 5 stars

Free of filamentous algae F

Variants from: 1

from €17.37*
%
tip
Star
Star
Star
Star
Star
Star

Average rating of 4.7 out of 5 stars

Free of filamentous algae F

Variants from: 1

from €17.37*
15 %
tip
Star
Star
Star
Star
Star
Star

Average rating of 4.7 out of 5 stars

Free of filamentous algae F

Variants from: 1

from €17.37*

10 of 54 reviews

Star
Star
Star
Star
Star
Star

Average rating of 4.7 out of 5 stars


72%

26%

2%

0%

0%



10 September 2013 20:09

Star
Star
Star
Star
Star

Rated 5 out of 5 stars

Ekomi-Bewertung

Habe das Mittel vor 8 Tagen im meinem Teich verwendet. Schon jetzt sind alle Algen weg. Einfach perfekt. Alles Top!

18 December 2015 13:12

Star
Star
Star
Star
Star

Rated 5 out of 5 stars

Ekomi-Bewertung

Ich gebe alle 4 Wochen Fadenalgenstop entsprechend den Anwendungshinweisen. Ich habe kein Problem mehr mit Fadenalgen und bin sehr zufrieden.

28 May 2013 08:05

Star
Star
Star
Star
Star

Rated 5 out of 5 stars

Ekomi-Bewertung

wirkt sehr gut

15 June 2021 07:18

Star
Star
Star
Star
Star

Rated 5 out of 5 stars

Ekomi-Bewertung

Alles gut und funktioniert

19 May 2016 16:05

Star
Star
Star
Star
Star

Rated 5 out of 5 stars

Ekomi-Bewertung

wir bestellen das Produkt jedes Jahr, es ist super!

4 April 2018 02:01

Star
Star
Star
Star
Star

Rated 5 out of 5 stars

Ekomi-Bewertung

Ich habe das Säckchen in Wasserzirkulation gegeben.Wirkung trat nach 3 Tagen ein.Super 👍

11 June 2015 20:06

Star
Star
Star
Star
Star

Rated 5 out of 5 stars

Ekomi-Bewertung

das schöne ist, 2 Beutel davon halten die ganze Sommersaison und ggf. der 3. Beutel auch über den Winter bei 9000ltr

19 June 2017 05:54

Star
Star
Star
Star
Star

Rated 5 out of 5 stars

Super Produkt !

nach 1 Woche alles weg ! und vorallem keine Chemie ! echt top ! danke

29 May 2024 13:18

Star
Star
Star
Star
Star

Rated 5 out of 5 stars

Ekomi-Bwertung

Es wirkt jedes Jahr, ich habe kaum Algen im Teich, aber total ohne Algen würde dann auch keine kois drin schwimmen können , das Mittel hält die Algen im Schacht, super Produkt!

15 June 2021 07:17

Star
Star
Star
Star
Star

Rated 5 out of 5 stars

Ekomi-Bewertung

Hat wirklich was gebracht, weniger Algen als zuvor und da hatte ich schon einige andere Mittel ausprobiert