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greenwater bottles

Buy Live Greenwater

Ultra-dense, nutritionally rich freshwater phytoplankton — cultivated in multiple species and ready to feed your daphnia, moina, copepods, and fish fry the moment it arrives. Professionally grown in closed-system photobioreactors. Shipped nationwide across the United States. No culturing required.

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Why buying beats culturing ↓

Why Greenwater Is So Hard to Culture

Most people have never worked with phytoplankton and have no idea how to grow it. Unlike aquarium plants or even bacteria cultures, phytoplankton requires precise scientific conditions that are exceptionally difficult to maintain at home — especially over the long term. Cultures crash without warning, and starting over means weeks of lost time.

Precise Light Requirements

Phytoplankton requires specific light intensity, spectrum, and photoperiod cycles. Too little light and growth stalls. Too much and you overheat the culture or trigger die-offs. Most home setups use the wrong type of light entirely.

Nutrient Dosing Is a Science

Phytoplankton needs precise ratios of nitrogen, phosphorus, trace minerals, and silicates depending on the species. Dosing too much causes nutrient toxicity. Too little starves the culture. There is no forgiving middle ground.

Contamination Destroys Cultures

Bacteria, fungi, rotifers, and competing algae species can wipe out a phytoplankton culture in days. Maintaining sterile conditions at home is extremely difficult. One contaminated water top-off and weeks of culturing are gone.

Temperature Sensitivity

Most freshwater phytoplankton species thrive in a narrow temperature band. Home environments fluctuate constantly — summer heat, winter cold, heater malfunctions. These swings cause culture density to plummet or crash entirely.

What Makes Hydralife Greenwater Different

Hydralife Solutions is the sole U.S. producer of ultra-dense, nutritionally rich live freshwater greenwater cultivated in multiple phytoplankton species. Every bottle is professionally grown in closed-system, monospecific photobioreactors — not scraped from a pond or cultured in a garage.

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Ultra-Dense Concentration

Our greenwater is far more concentrated than anything you can culture at home or buy from small hobby sellers. Professionally cultivated in photobioreactors with optimized nutrients, minerals, and lighting.

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Multiple Species Available

We cultivate a variety of freshwater phytoplankton species, each in its own monospecific closed system. Different zooplankton thrive on different phytoplankton — Hydralife provides the right species for your cultures.

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Nutritionally Rich

Every bottle is packed with vitamins, minerals, proteins, and lipids that zooplankton and fish fry need to thrive. Our professional-grade care ensures peak nutritional content.

Live Greenwater — Choose Your Size

All Hydralife greenwater is cultivated fresh and shipped nationwide across the United States, Monday through Thursday, to ensure live arrival. Subscribe and save 10% on every order.

Single Bottle
$29.99
Subscribe & Save: $26.99

1 bottle of ultra-dense live greenwater. Great for getting started or supplementing an existing culture.

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3-Pack Combo
$69.98
Subscribe & Save: $62.98

3 bottles of ultra-dense live greenwater. Best value for hobbyists running multiple cultures or breeding tanks.

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5-Pack Combo
$99.98
Subscribe & Save: $89.98

5 bottles of ultra-dense live greenwater. Ideal for serious breeders, hatcheries, and scaling up live food production.

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5 Gallons
$499.98
Subscribe & Save: $449.98

5 gallons of ultra-dense live greenwater. For commercial operations, large-scale breeders, and pond inoculation.

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Who Uses Hydralife Greenwater?

Whether you are breeding fish, culturing live food, or inoculating a pond, Hydralife greenwater provides the ultra-dense, nutritionally rich phytoplankton foundation your system needs.

Daphnia & Moina Culturists

Greenwater is the #1 food source for daphnia and moina cultures. Stop dealing with yeast, spirulina powder, or crashing DIY cultures. Hydralife greenwater keeps your colonies thriving with ultra-dense, living nutrition.

Fish Breeders & Fry Growers

Greenwater is one of the best first foods for newly hatched fish fry — especially tiny species like bettas, gouramis, killifish, and egg-scatterers. The microscopic phytoplankton stays suspended and will not foul your tanks.

Copepod & Rotifer Cultures

Copepods and rotifers thrive on live phytoplankton. Hydralife greenwater provides a consistent, ultra-dense food source that keeps your cultures productive without maintaining a separate algae reactor.

Pond & Lake Inoculation

Hydralife greenwater contains beneficial phytoplankton used in large-scale bioremediation. Adding it to outdoor ponds establishes the base of the food chain, improves water quality, and provides a natural foundation for aquatic ecosystems.

Hydralife vs. DIY Greenwater

Most aquarists attempt to culture greenwater at home. Here is why buying from Hydralife saves you time, money, and frustration — and delivers a far superior product.

FeatureHydralife GreenwaterDIY Home Culture
Ready to use immediately Ships ready to pour Takes 1-3 weeks to establish
Consistent density Photobioreactor-cultivated, ultra-dense Varies wildly, often thin
Culture crash risk Professionally maintained, zero risk to you Crashes constantly
Nutritional quality Peak nutrition, optimized conditions Nutrient-depleted
Species purity Monospecific closed systems Contaminated with unwanted organisms
Multiple species available Variety for different zooplankton Whatever survives your conditions
Knowledge required None — just pour and use Phycology, nutrient chemistry, sterile technique
Equipment needed None Containers, grow lights, fertilizer, air pumps, test kits
Long-term reliability Subscribe for consistent delivery Cultures degrade and crash over weeks

Frequently Asked Questions

Everything you need to know about buying and using Hydralife greenwater.

What exactly is greenwater?
Greenwater is water containing a dense suspension of live, beneficial freshwater phytoplankton — microscopic algae that form the base of the aquatic food chain. The green color comes from the high concentration of chlorophyll-producing algae. Greenwater is the natural, ideal food source for daphnia, moina, copepods, rotifers, and fish fry.
Why is greenwater so difficult to culture at home?
Phytoplankton requires precise control over light intensity, water temperature, nutrient dosing ratios, CO2 levels, and sterile technique. Even experienced aquarists find their cultures crash constantly — maintaining a stable, dense, pure culture is exceptionally difficult without professional photobioreactor equipment. That is why Hydralife exists.
What species of phytoplankton does Hydralife grow?
Hydralife cultivates multiple freshwater phytoplankton species, each in its own monospecific closed system. Different zooplankton species thrive on different phytoplankton, and our variety ensures you get the right food for your specific cultures.
How do I use it for daphnia and moina?
Pour Hydralife greenwater directly into your daphnia or moina culture vessel. The phytoplankton stays suspended and provides continuous nutrition. For maintenance feeding, add enough greenwater to keep your culture water visibly green. For starting new cultures, use Hydralife greenwater as the base water before adding your starter colony.
Can I use this for fish fry?
Absolutely. Greenwater is one of the best first foods for newly hatched fish fry, especially for species with very small fry like bettas, gouramis, killifish, and rainbowfish. The microscopic phytoplankton particles are small enough for even the tiniest fry to consume from day one.
Can I use Hydralife greenwater in my outdoor pond?
Yes. Hydralife greenwater is an excellent beneficial algae for ponds, lakes, and waterways. The freshwater phytoplankton absorbs excess nutrients such as nitrogen and phosphates, consumes CO2 and produces oxygen, and provides a continuous food source for your aquatic ecosystem. For large-scale applications, Hydralife also offers bulk phytoplankton.
Where does Hydralife ship?
Hydralife ships greenwater to all 48 contiguous United States. Orders ship Monday through Thursday to ensure your live phytoplankton arrives fresh and viable within 48 hours of shipment.
How should I store greenwater after it arrives?
Keep your Hydralife greenwater at room temperature in indirect light. Avoid direct sunlight or temperatures below 50°F or above 90°F. For best results, use within a few weeks of delivery. Give the bottle a gentle shake before each use to resuspend any settled phytoplankton.
Can I subscribe for regular deliveries?
Yes. Hydralife offers biweekly and monthly subscription options with a 10% discount on every order. Subscriptions ensure your cultures always have fresh greenwater on hand. You can cancel anytime.

Stop Struggling. Start Feeding.

Greenwater is too difficult and too unpredictable to culture at home. Get ultra-dense, nutritionally rich, professionally cultivated phytoplankton delivered to your door — anywhere in the United States.

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Hydralife Logo
An image of a rose with white and red stripes growing in Colorado

Hydralife Solutions is an organization that loves to produce animals and algae of the aquatic realm.  We love algae, phytoplankton, zooplankton, beneficial bacteria, water treatment, water chemistry, structured water, rivers, ponds, lakes, aquariums, coral reefs, and the ocean.  We would like to acknowledge and thank all of those who believe in us, those who have taught us, those who contribute to our success, those who support our mission, those who enjoy aquariums and bodies of water, those who work to preserve the earth and of course, our dear customers. 

Founded by Ryan Philipsborn, we sought to build a company where team members can productively enjoy the art of work.   Aquaculture is a developing field in which one is granted the gift of always learning, and one can usually receive a healthy dose of comedy and/or humility.  Therefore, we are honored to make contributions, discoveries, and learn in a field very few are lucky enough to participate in.  Our organization operates with transparency across all departments, with team members who value working as a collective unit.  As a result, we learn from each other's work and celebrate individual and collective success.  Most importantly, we work with purpose to help Mother Nature and the people of the water realm by producing natural solutions to face the many challenges that are growing more prevalent.   

 

Ryan's background is in operational and human resources management, specializing in plant transformations, team development, lean manufacturing, objectives & key results, and output.  However, Ryan's true purpose has always been in service to the water realm.  Ryan fell in love with aquatics the very first time he saw a coral when he was 19 years old, working a full-time job at Aqua Imports selling snakes and exotic pets while attending the University of Colorado Boulder, where he obtained a degree in Sociology.  Since then, Ryan has dedicated his life to understanding the world of aquatics and the care of coral reefs and bodies of water.  Through his two and a half decades of experience in this work, Ryan has found great joy in helping others discover the visual, spiritual, and mental benefits of water work.  Through this experience, Ryan was able to specialize in coral reefs, coral propagation, phycology (the study of algae), and planktology.  Ryan also might be one of the few people who has grown a long ton (2,240 lbs) of refugium macroalgae through commercial aquaculture inland.    

In his free time, Ryan spends time creating structured water by working with the properties of water and human health.  He also cares for roses and his personal reef aquarium.  Ryan appreciates meditation, loves to learn from people's gifts, and enjoys riding his bicycle, which he claims is the biggest in Denver because of his height. 

An image of Ryan Philipsborn, CEO of the bioremediation start up company, Hydralife Solutions
An image of a freshwater tank managed by Ryan Philipsborn
A freshwater reef with small fishes that feed on copepods and other types of zooplankton.
An image of a saltwater reef being cared for with phytoplankton and zooplankton.
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