Discover
Guides, research and practical ideas on microalgae for people, pets, farms and the planet.
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How to Harvest Algae From a Healthy Culture
The four ways to harvest microalgae at home or small scale, from straining to settling, with what suits each species and what to do…
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Harvesting Spirulina When Feeding Live Food
How to strain Spirulina through a fine cloth, rinse it and feed it fresh to shrimp, Daphnia and snails, step by step.
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The Growth Phases of an Algae Culture
Every batch culture passes through lag, exponential, linear, stationary and decline phases. What each looks like and when to harvest or split.
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Green Water in Larval Rearing: What It Is and Why It’s Used
Green water is live microalgae added to larval tanks. What it does for fish larvae, how it is used in hatcheries and how hobbyists…
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Nutrients and Culture Media for Home Microalgae
What algae need to grow: nitrogen, phosphorus, trace minerals and carbon. Standard media, a simple home approach and how to spot a deficiency.
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Recirculating Aquaculture Systems and Algae: What to Know
How microalgae fit into recirculating aquaculture: nutrient removal, oxygen swings, where they help and where they cause trouble.
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Preventing Contamination in Home Algae Cultures
Most failed cultures are contaminated cultures. The sources, the warning signs and a short routine of clean habits that prevents nearly all of it.
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Seeing Microalgae Under a Microscope
What Chlorella and Spirulina look like at 100x to 400x, what you need to see them, and how to tell a healthy sample from…
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Microalgae in Shellfish Hatcheries: Food for Oysters and Clams
Bivalve hatcheries feed larvae and juveniles on live microalgae. Which species are used, how much, and why algae production is half the business.
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Temperature Control for Chlorella and Spirulina
Chlorella wants 25 to 30 degrees and Spirulina 30 to 35. Practical ways to heat, cool and measure a small culture without special equipment.
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Spirulina vs Chlorella: Two Very Different Microalgae
Spirulina and Chlorella look similar in a jar but differ in biology, culture needs and uses. A direct comparison to help you choose.
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Feeding Filter Feeders in a Home Tank
Shrimp, clams, fan worms and Daphnia filter food from the water. How to feed them live Chlorella without fouling the tank.
All guides
- What Is Phycocyanin? The Blue Pigment in Spirulina
- Harvesting Chlorella When Feeding Live Food
- Choosing the Right Container for an Algae Culture
- Chlorophyll in Algae: How Microalgae Capture Light
- Nutrients for Algae When Feeding Live Food
- Water for Algae Cultures: Tap, Spring or Distilled?
- Scaling Up Algae Cultures When Feeding Live Food
- Water for Spirulina Cultures When Feeding Live Food
- Green Water for Fry: A Simple Hobbyist Guide
- Live Feed vs Dry Feed for Fish Larvae
- Algae Cell Walls: Why Chlorella Is Tough to Break
- Daphnia and Algae: Raising Live Food at Home
- How to Harvest Algae From a Healthy Culture
- Harvesting Spirulina When Feeding Live Food
- The Growth Phases of an Algae Culture
- Green Water in Larval Rearing: What It Is and Why It’s Used
- Nutrients and Culture Media for Home Microalgae
- Recirculating Aquaculture Systems and Algae: What to Know
- Preventing Contamination in Home Algae Cultures
- Seeing Microalgae Under a Microscope
- Microalgae in Shellfish Hatcheries: Food for Oysters and Clams
- Temperature Control for Chlorella and Spirulina
- Spirulina vs Chlorella: Two Very Different Microalgae
- Feeding Filter Feeders in a Home Tank
- Why You Should Keep a Log of Your Algae Culture
- Why Aquarium Water Turns Green and What It Means
- Water Quality Basics in Microalgae-Fed Systems
- Cyanobacteria vs Algae: Why Spirulina Isn’t an Alga
- Safe Ways to Add Algae to a Tank: Dosing and Water Quality
- How to Split and Scale Up an Algae Culture
- Small-Scale Algae Production for a Hatchery
- How Chlorella Reproduces
- Small Habits That Make Algae Culturing Greener
- Spirulina Culture Basics: Warmth, Light and Alkaline Water
- How Spirulina Grows: Filaments and Trichomes
- Why Microalgae Can Use Less Land Than Many Crops
- Spirulina and Chlorella: A Plain-Language Introduction
- Choosing Microalgae for Live Feed: Size and Ease of Culture
- Live Algae Cultures vs Dried Algae Products
- Why Microalgae Are So Small and Why That Matters
- Feeding Rotifers With Chlorella
- How Microalgae Take Up Carbon Dioxide
- How to Tell if Your Algae Culture Is Healthy
- Culturing Live Food for Your Aquarium Fish