A seaweed farmer in an outrigger boat tending a line of Kappaphycus seaweed off the coast of Western Mindanao

From sea
to field.

Tropical seaweed biostimulants made in the Philippines, for any crop.

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  1. 01 · SeaFarmed at seaSeaweed direct from smallholder farms
  2. 02 · ShoreProcessed freshIn Zamboanga City, within 2 hours of harvest
  3. 03 · ProductMade into TropistimA liquid biostimulant, under your label or ours
  4. 04 · FieldApplied in the fieldOn any crop, in the Philippines and overseas
01Why AlgaTrop

Three things other seaweed processors can't offer you.

<2 hoursharvest to processing

Fresh seaweed, not dried and traded.

Our facility in Zamboanga City sits close to the farms. This allows us to work with only the freshest material.

Kappaphycusnot Ascophyllum

A seaweed your competitors aren't selling.

Most seaweed biostimulants start from cold-water wild-harvest sources. Ours is from a tropical red seaweed, farmed year-round at massive scale.

Philippine prices

Made here, not imported.

Philippine partners buy from a Philippine manufacturer, in pesos, without costly imports. Overseas partners get an affordable, tropical supply option outside the usual sources.

02The product

Tropistim

A 1 litre bottle of Tropistim by AlgaTrop, tropical seaweed liquid biostimulant, beside a glass beaker of the dark green liquid
  • Very high seaweed content
  • Developed to help reduce reliance on conventional nitrogen fertiliser
  • Processed from fresh biomass for strong bioactive retention

Tropistim is a liquid biostimulant made from fresh Kappaphycus alvarezii.

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03Who we work with

From the Tropical Seaweed Heartland to your fields.

PHILIPPINES Domestic market · AlgaTrop brand SEAWEED FARMING HEARTLAND Zamboanga · Basilan · Sulu · Tawi-Tawi Zamboanga Basilan Sulu Tawi-Tawi OVERSEAS AlgaTrop's processing facility in Barangay Mercedes, Zamboanga City Zamboanga City Processing facility PHILIPPINES Domestic market AlgaTrop brand OVERSEAS Zamboanga Basilan Sulu Tawi-Tawi SEAWEED FARMING HEARTLAND Zamboanga · Basilan · Sulu · Tawi-Tawi AlgaTrop's processing facility in Barangay Mercedes, Zamboanga City Zamboanga City Processing facility
04Made in Zamboanga

In direct partnership with the seaweed farmers who grow it.

We buy fresh seaweed directly from smallholder farmers, allowing fully traceable and high quality produce - while ensuring they are not left behind.

A farmer's hand in a white crate of freshly harvested Kappaphycus seaweed in Zamboanga
20Farmers supplying fresh seaweed
+20%Farmer take-home income uplift
5 daysLess farm work required
05Field notes

From the farms, the facility and the field.

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Processing and supply · The Fish Site

Western seaweed sector cannot scale on temperate biomass alone

The Global Seaweed Basket: linking tropical and temperate seaweed supply.

Read the article
Award · Mindanao TECH PLANTER

AlgaTrop wins the Leave a Nest Award at Mindanao TECH PLANTER 2026

Recognised for producing agricultural biostimulants from tropical seaweed at the Demo Day in Davao City, 26 September 2026.

Read the announcement
Milestone · Startupbootcamp

AlgaTrop graduates from Startupbootcamp's Sustainability Singapore 2026 programme

We pitched at the programme's Demo Day in Singapore on 16 July 2026.

See the Demo Day page

Evaluate it on your own crop.

One crop, one geography, one performance objective.

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