Guide to Culturing Copepods

REEFPHYTO COPEPOD CULTURE KIT

Complete Culturing Guide

Thank you for purchasing your Reefphyto Copepod Culture Kit! This guide will help you establish and maintain a thriving copepod culture. Follow these instructions carefully to ensure the best results for your aquatic ecosystem.

Getting Started

Before beginning your culture, gather all necessary equipment and prepare your workspace. Success starts with proper preparation and clean materials.

Required Equipment

  • Clean culture vessel (small aquarium or clear plastic container)
  • Air pump with airline tubing
  • Container cover (allows air exchange while preventing contamination)
  • Clean synthetic seawater at 35 ppt specific gravity
  • Reefphyto Copepod Feed
  • Drip loop and check valve for airline
  • Turkey baster (for cleaning)

Initial Setup Steps

  1. Prepare the vessel: Fill your clean culture vessel between 1/2 and 2/3 full with synthetic seawater.
  2. Install aeration: Set up airline tubing with a drip loop and check valve. Do not use an airstone - gentle bubbles directly from the tubing are ideal.
  3. Adjust airflow: Set your air pump to produce 1-3 bubbles per second. This gentle aeration prevents stress while maintaining water circulation.
  4. Cover the container: Place a cover over the container while ensuring adequate air exchange to prevent contamination.
  5. Add your copepods: Gently introduce the copepods from your starter culture into the prepared vessel.

Daily Care and Feeding

Feeding Your Culture

Proper feeding is crucial for culture health. Overfeeding is the most common cause of culture crashes, so monitor water clarity carefully.

⚠️ Important: Overfeeding is the #1 cause of culture crashes. When in doubt, feed less!
  • Target colour: Add Reefphyto Copepod Feed until the water matches the colour of a Granny Smith apple skin - a light, cloudy green.
  • Cloudiness test: The water should be cloudy enough that you cannot see clearly through the container to the opposite side.
  • When to feed: Add more food as soon as the water begins to clear. This typically occurs every 1-3 days, depending on population density.
  • Start conservatively: In the first week, use less food than you think necessary. It's easier to add more than to recover from overfeeding.

Water Parameters

Maintain stable water conditions for optimal copepod health and reproduction:

Parameter Target Range
Specific Gravity 35 ppt (maintain consistency)
Temperature Stable room temperature (avoid fluctuations)
pH Monitor regularly, perform water change if unstable
Ammonia/Nitrite Should remain near zero; perform 50% water change if elevated
Nitrate Monitor regularly, perform water change if excessive

Maintenance Schedule

Daily Tasks

  • Check water clarity to determine if feeding is needed
  • Verify aeration system is functioning properly
  • Observe copepod activity and population

Weekly Tasks

  • Test water parameters (pH, ammonia, nitrite, nitrate)
  • Record observations in your maintenance log
  • Remove any debris from the bottom using a turkey baster

As-Needed Maintenance

  • Perform a 50% water change if ammonia or nitrite levels rise above acceptable levels
  • Clean container walls if algae buildup interferes with observation
  • Adjust airflow if needed (always maintain 1-3 bubbles per second)

Troubleshooting

Culture Crash

Symptoms: Sudden decrease in copepod population, foul odour, cloudy or discoloured water.

Causes: Most commonly caused by overfeeding or poor water quality. Can also result from temperature extremes or contamination.

Solutions:

  • Immediately perform a 50% water change with clean seawater
  • Stop feeding until water clears and copepods show active movement
  • Test water parameters and address any issues
  • Resume feeding at a much lower rate once culture stabilises

Slow Growth

Symptoms: Population not increasing noticeably over several weeks.

Causes: This is normal in the first 2-4 weeks as the culture establishes. May also indicate underfeeding or suboptimal conditions.

Solutions:

  • Be patient - initial establishment takes time
  • Ensure water temperature is stable and within optimal range
  • Verify adequate feeding (water should be consistently cloudy)
  • Check that aeration is functioning properly

Persistent Cloudy Water

Symptoms: Water remains very cloudy for 3+ days without clearing.

Causes: Typically indicates overfeeding or insufficient copepod population to consume the food provided.

Solutions:

  • Stop feeding immediately
  • Allow copepods to consume existing food until water begins to clear
  • Test water parameters - perform water change if ammonia or nitrite is elevated
  • Resume feeding at a reduced rate

Tips for Long-Term Success

  • Start clean: Always use thoroughly cleaned equipment to prevent introducing harmful bacteria or contaminants.
  • Consistency is key: Maintain stable conditions - avoid sudden changes in temperature, salinity, or feeding amounts.
  • Less is more: When in doubt, underfeed rather than overfeed. You can always add more food, but overfeeding causes serious problems.
  • Keep detailed records: Document feeding amounts, water parameter readings, and population observations. This helps identify patterns and troubleshoot issues.
  • Monitor feeding response: Pay attention to how quickly your culture clears the water. This indicates population size and health.
  • Be patient: Copepod cultures take 3-6 weeks to fully establish. Slow initial growth is normal and expected.
  • Join the community: Connect with other aquarists in online forums and communities to share experiences and learn from others.

💡 Pro Tip: Keep a notebook or digital log next to your culture vessel. Record feeding dates, amounts, and observations. This becomes invaluable when troubleshooting or optimising your feeding schedule.

Harvesting Your Copepods

Once your culture is well-established (typically after 4-6 weeks), you can begin harvesting copepods for your aquarium.

  • Only harvest from a thriving, dense culture with visible copepod activity
  • Remove no more than 25-30% of the culture volume at one time
  • Allow at least 7-10 days between harvests for population recovery
  • Replace harvested volume with fresh synthetic seawater

Need Help?

We're here to support your success! If you have questions or encounter challenges with your copepod culture, please don't hesitate to reach out to our customer service team. We're committed to helping you achieve a thriving, sustainable culture.

Contact: Darren Wordley
Reefphyto Customer Services

Thank you for choosing Reefphyto!