---
product_id: 48334390
title: "Reef Phytoplankton, 250 mL / 8.5 fl. oz."
brand: "seachem"
price: "HK$294"
currency: HKD
in_stock: true
reviews_count: 13
category: "Seachem"
url: https://www.desertcart.hk/products/48334390-reef-phytoplankton-250-ml-8-5-fl-oz
store_origin: HK
region: Hong Kong
---

# Optimized for all pet aquatic life 250 mL premium liquid formula Proudly made in the USA Reef Phytoplankton, 250 mL / 8.5 fl. oz.

**Brand:** seachem
**Price:** HK$294
**Availability:** ✅ In Stock

## Summary

> 🐠 Elevate your reef’s ecosystem with every drop!

## Quick Answers

- **What is this?** Reef Phytoplankton, 250 mL / 8.5 fl. oz. by seachem
- **How much does it cost?** HK$294 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/48334390-reef-phytoplankton-250-ml-8-5-fl-oz)

## Best For

- seachem enthusiasts

## Why This Product

- Trusted seachem brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Pure & Potent Formula:** Rich blend of phytoplankton species fuels vibrant aquatic ecosystems.
- • **Value-Driven Vitality:** Affordable, high-impact supplement that elevates your aquarium’s health.
- • **Effortless Aquarium Boost:** Simple daily dosing keeps your reef thriving with zero hassle.
- • **Universal Pet Compatibility:** Perfectly balanced for all life stages of your aquatic pets.
- • **Trusted American Craftsmanship:** Manufactured in the USA for guaranteed quality and safety.

## Overview

Reef Phytoplankton is a 250 mL liquid supplement formulated with a potent mix of phytoplankton species designed to enhance aquatic pet health. Made in the USA, it offers an easy-to-use daily dosing system that supports all life stages of reef inhabitants, delivering exceptional value and quality for aquarium enthusiasts.

## Description

Product Description This product is easy to use. This product adds a great value. This product is Manufactured in United States. This product is designed for pets and there use. Ingredients Water, Thalassiosira Weissflogii, Isochrysis Sp, Nannochloropsis, Protein Hydrolysates With Carotenoids, Citric Acid, Carboxylic Acid, Methyl Paraben, Sodium Propionate. P.when('A').execute(function(A) { A.on('a:expander:toggle_description:toggle:collapse', function(data) { window.scroll(0, data.expander.$expander[0].offsetTop-100); }); }); Directions Dose 1 capful (5 mL) per 50 gallons of water daily for the first 7 days of use. See more

Review: As expected, good brand - As expected
Review: Good product - Arrived on time and does as intended

## Features

- This product is easy to use
- This product adds a great Value
- This product is Manufactured in United States

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B004YLJ822 |
| Allergen Information | Gluten Free |
| Batteries | 1506 Lithium Metal batteries required. |
| Batteries Included | No |
| Batteries required | No |
| Best Sellers Rank | 46,385 in Pet Supplies ( See Top 100 in Pet Supplies ) 489 in Aquarium Water Treatments |
| Customer Reviews | 4.4 4.4 out of 5 stars (1,522) |
| Date First Available | 9 Aug. 2012 |
| External Testing Certification | Não aplicável |
| Item Form | Liquid |
| Item Weight | 250 g |
| Item model number | 1506 |
| Number of Items | 1 |
| Pet Life Stage | All Life Stages |
| Product Dimensions | 4.93 x 4.93 x 16.51 cm; 250 g |
| Quantity | 1 |
| Size | 250 mL |
| Specific Uses | Active |
| Volume | 250 Millilitres |

## Product Details

- **Brand:** Seachem
- **Item form:** Liquid
- **Item weight:** 250 Grams
- **Liquid volume:** 250 Millilitres
- **Manufacturer:** Seachem Laboratories, Inc.

## Images

![Reef Phytoplankton, 250 mL / 8.5 fl. oz. - Image 1](https://m.media-amazon.com/images/I/71ywIIhCYgL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: How long does it last without freezing it?**
A: It lasts for couple months but if you keep it in the fridge not the freezer it lasts much longer,I’ve had one open for 3 months kept in fridge no problems

**Q: Is this live Phyto plankton please**
A: If you are thinking of starting your own culture - this is not suitable for this purpose.

**Q: Can this be used to feed copepods to help them establishing a Reef tank**
A: Yes it can

## Customer Reviews

### ⭐⭐⭐⭐⭐ As expected, good brand
*by A***L on 11 December 2025*

As expected

### ⭐⭐⭐⭐⭐ Good product
*by K***E on 27 May 2018*

Arrived on time and does as intended

### ⭐⭐⭐⭐⭐ Five Stars
*by L***S on 10 February 2016*

Excellent product thanks

## Frequently Bought Together

- Reef Phytoplankton, 250 mL / 8.5 fl. oz.
- Seachem Reef Zooplankton 250 ml.
- Seachem Reef Plus 500ml

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**Shop now:** [https://www.desertcart.hk/products/48334390-reef-phytoplankton-250-ml-8-5-fl-oz](https://www.desertcart.hk/products/48334390-reef-phytoplankton-250-ml-8-5-fl-oz)

---

*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-02-08*