Is algenkalk profitable to sell on Amazon Germany?

The niche generates €56K/yr across 9 tracked products. 90-day search growth is +47.9%. Flapen's verdict: Skip it (47/100).

How competitive is the algenkalk niche?

7 brands and 22 sellers compete. The top 5 products take 85% of clicks and top 5 brands hold 90% of demand.

What do buyers complain about in algenkalk?

Top complaints mined from reviews: Benutzerfreundlichkeit, Preis-Leistungs-Verhältnis, Montage/Installation. The return rate is 0.1%.

When does demand for algenkalk peak?

Demand peaks in Mar–Apr–May–Aug; the busiest month runs 18.7× the quietest.

What does it cost to enter the algenkalk niche?

Listings span €7.78–€30.90; the average listing price is €19.27 (sweet spot $15–$100). The average incumbent carries 917 reviews — the moat a new listing must climb.

algenkalk

Skip it

A concentrated shelf (top 5 take 85% of clicks) — this niche doesn't clear our bar today.

Returns

Incredible0.1%

return rate — above 5% kills the launch gate

Avg price

Great€19.27

avg listing price — sweet spot $15–$100

Price range

Good€7.78–€30.90

cheapest to priciest tracked listing — scored on the share inside $15–$100

Growth

Good+47.9%

90-day search growth — must beat 0% to launch

Conversion

Good6.0%

search→purchase rate — share of searches ending in a sale

Review moat

Good916.67

avg incumbent reviews — the moat a new listing must climb

Quality gap

Okay4.6★

avg incumbent rating — lower means beatable quality

Brand share

Bad90%

top-5 brand share — brand-locked demand

Market size

Bad€56K

€56K/yr · 48K searches

Competition

Bad85%

top-5 click share — a locked-up shelf

According to Flapen's Amazon Germany niche tracking, algenkalk is a €56K/yr Amazon Germany market (48K searches/yr). The top 5 brands hold 90% of demand. Demand peaks in Mar–Apr–May–Aug. Verdict: Skip it — 47/100.

Data updated Jul 13, 2026 · scored weekly · How we score niches

algenkalk market data

Units sold / yr: 4K–5K; avg 500–750/product
Revenue / yr: €77K–€96K; units × avg price
Conversion rate: 6.0%
Avg BSR: #97
Page quality: 0%
Prime: 56%
Sponsored: 78%
Out of stock: 0.0%
Avg brand age: 79 months
Avg seller age: 191 days

Competition & brand share

The top 5 products capture 85% of clicks — a locked-up shelf that new listings rarely crack.

Brands

7 flat

Sellers

Top-5 brand share

90%

Top 20: 100%

Top-5 click share

85%

Top 20: 100%

Open market

NATUREFLOW47%
Terra Domi14%
Dehner11%
Compo10%
Hauert7%
Veddelholzer6%
Open — no brand owns it (1 brand, 4%)

Demand & seasonality

Weekly Amazon search volume, last 104 weeks — +47.9% search growth over the last 90 days.

Peak months: Mar, Apr, May, Aug · busiest ÷ quietest = 18.7×

Open Trend

Top algenkalk search terms

algenkalk32K/yr +38.0%6.6% conv.
algenkalk für buchsbäume13K/yr +90.5%11.1% conv.
algenkalk kaufen3K/yr +13.9%3.8% conv.

All search terms

Top algenkalk products on Amazon

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 9 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

TESTSIEGER Bio Algenkalk für Buchsbäume Widerstandskraft und Regeneration für anfällige Buchsbäume (Buchsbaumzünsler) - Premium Buchsbaum Dünger und Spritzmittel - Buchsbaumdünger 1kg

NATUREFLOW€14.494.6★1,971 rev

TerraDomi 10kg natürlicher Algenkalk für 250m I 100% echter Algenkalk zur Stärkung der Widerstandsfähigkeit von Buchsbäumen und anderen Pflanzen I Beugt Befall von Buchsbäumzünsler und Pilzen vor

Terra Domi€21.794.6★361 rev

Dehner Algenkalk hochwertiger Dünger zur Blattdüngung / Bodendüngung aus 100 % natürlichen Meeresablagerungen hoher Calciumgehalt 2 kg für ca. 40 qm bunt

Dehner€7.784.7★159 rev

Compo Algenkalk für Buchsbäume Pflanzenstärkungsmittel zur allgemeinen Gesunderhaltung von Buchsbäumen 1000 g

Compo€7.894.4★574 rev

Hauert Manna Algenkalk 25 kg Bodenaktivator Bodenverbesserer Buchsbaumschutz

Hauert€25.964.6★229 rev

Newest

by launch date

TESTSIEGER Bio Algenkalk für Buchsbäume Widerstandskraft und Regeneration für anfällige Buchsbäume (Buchsbaumzünsler) - Premium Buchsbaum Dünger und Spritzmittel - Buchsbaumdünger 1kg

NATUREFLOW€14.491,971 rev

2y ago

Dehner Algenkalk hochwertiger Dünger zur Blattdüngung / Bodendüngung aus 100 % natürlichen Meeresablagerungen hoher Calciumgehalt 2 kg für ca. 40 qm bunt

Dehner€7.78159 rev

2y ago

Manna Algenkalk 5 kg für ca. 50 m Pulver Blattkalkung Naturprodukt Mangelerscheinungen vorbeugen Pflanzenresistenz erhöhen pH-Wert regulieren

Manna€14.45109 rev

4y ago

Terra Domi€21.79361 rev

4y ago

DER SIEGER 09/2020 Veddelholzer 6kg Bio Algenkalk 100% reines Pulver aus Meeresalgen stärkt Widerstandskraft & Regeneration des Buchsbaum beim Buchsbaumzünsler Buchsbaumdünger Naturdünger

Veddelholzer€30.90905 rev

6y ago

What buyers say about algenkalk

What buyers praise and complain about, mined from review topics.

What buyers love

Qualität insgesamt30%

“Top Qualität”

Pflanzenwachstum15%

“Die Pflanze wird kräftig”

Preis-Leistungs-Verhältnis10%

“Und der Preis ist ok”

Benutzerfreundlichkeit10%

“Ansonsten leichte Anwendung und sehr effektiv”

beworben Vs Tatsächliches Produkt8%

“Produkt wie beschrieben”

Stärke8%

“Sehr wirksam”

Haltbarkeit8%

“Wirkt zuverlässig”

Umweltfreundlichkeit5%

“Algenkalk hat meinen Buchs gut getan, er treibt aus und sieht wieder Gesund aus”

Funktionalität insgesamt5%

“Produkt wirkt”

What buyers complain about

Benutzerfreundlichkeit33%

“Zur Verwendung und mit weniger Inhalt ein NoGo”

Preis-Leistungs-Verhältnis33%

“Viel tu teuer”

Montage/Installation17%

“ich musste von Hand zusammen fegen.”

Top return reasons

Auslaufsicher33%

Preis-Leistungs-Verhältnis17%

Gesamtgröße17%

Qualität insgesamt17%

Pflanzenwachstum17%

Common questions

Is algenkalk profitable to sell on Amazon Germany?: The niche generates €56K/yr across 9 tracked products. 90-day search growth is +47.9%. Flapen's verdict: Skip it (47/100).
How competitive is the algenkalk niche?: 7 brands and 22 sellers compete. The top 5 products take 85% of clicks and top 5 brands hold 90% of demand.
What do buyers complain about in algenkalk?: Top complaints mined from reviews: Benutzerfreundlichkeit, Preis-Leistungs-Verhältnis, Montage/Installation. The return rate is 0.1%.
When does demand for algenkalk peak?: Demand peaks in Mar–Apr–May–Aug; the busiest month runs 18.7× the quietest.
What does it cost to enter the algenkalk niche?: Listings span €7.78–€30.90; the average listing price is €19.27 (sweet spot $15–$100). The average incumbent carries 917 reviews — the moat a new listing must climb.