Copepod Culture Setup for Reef Tanks
A live copepod culture costs $30 to start and $5/month to maintain - cheaper than buying pods every 2 weeks, and infinitely sustainable.
Why culture vs buy
Buying 16oz of pods costs $30 every 2-3 weeks. A homegrown culture produces 8-32oz weekly indefinitely from one $30 starter culture. ROI: 1 month.
Vessel + setup
1-gallon glass jar OR 2L plastic bottle. Fill with saltwater (35 ppt). Add air-stone with gentle bubble. No light needed for the pods themselves; phyto needs light if cultured separately.
Choosing the species
- Tisbe biminiensis - hardy, the standard refugium pod, eats detritus + biofilm
- Tigriopus californicus - red color, bigger (~1.5mm), broadcast feeders prefer them
- Apocyclops panamensis - calanoid, tiny, ideal for larval clownfish + cardinalfish breeding
Mix 2 species for diversity. Start with Reef Nutrition Tigger Pods + AlgaeBarn 5280 Pods.
Feeding the culture
Live phytoplankton (Reef Nutrition Phyto Feast, AlgaeBarn OceanMagik) every 2-3 days. 1-2 capfuls per gallon. Pods eat the phyto cells, multiply, and reproduce.
Alternative: yeast suspension (1g per 1 gallon weekly) - cheaper but pods less nutritious for fish.
Harvesting + dosing
Use a 50-micron sieve. Pour 1/4 of the culture through every 1-2 weeks. Add the strained pods to your refugium or display directly. Top off the culture jar with fresh saltwater.
Dose at night - pods are nocturnal + hide in rockwork before fish wake up.
Troubleshooting
White film on surface: protein scum from overfeeding. Skim off with paper towel. Pod count crashing: overheated (>80°F) or starved (no phyto). Add fresh phyto + cool the room. Smells bad: bacterial bloom from rotting food. Restart with fresh saltwater.
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Aquarium-keeping fundamentals
Whatever specific topic brought you here, four fundamentals govern long-term aquarium success: water quality, parameter stability, biological filtration, and species-appropriate husbandry. Skip any one and the others struggle to compensate.
Water quality: ammonia + nitrite at zero, nitrate under 30 ppm freshwater + 10 ppm reef. Test weekly with API or Salifert kits. Use our water parameter checker to score your readings against your tank type.
Parameter stability: stable wrong parameters beat fluctuating ideal parameters. Most fish tolerate a wide pH range if it's stable. Sudden swings of 0.4+ pH or 5+°F kill fish faster than chronic suboptimal values. Use temperature controllers (Inkbird) + automated dosing for consistency.
Biological filtration: the bacterial colony on your filter media + rock + substrate is the engine. Never replace all media at once. Use our filter turnover calculator to size correctly.
Species-appropriate husbandry: research adult size, territoriality, diet, and tankmate compatibility before purchase. Use our tank stocking calculator + compatibility guides.
Frequently asked questions
How long does an aquarium take to set up? 4-6 weeks for full cycling + first stocking. Use our cycle ETA calculator + how long does cycling take.
What's the best aquarium for beginners? 20-gallon long. Big enough for parameter stability, small enough for budget + space. See beginner picks.
How often should I do water changes? 25-30% weekly. See water change frequency Q&A + water change calculator.
Why does my fish keep dying? 5 leading causes: uncycled tank, wrong species pairings, no quarantine, undersized tank, neglected water-change schedule. See full diagnosis.
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