Aquaponics

Growing to love growing tilapia

The fish grew to love me as the hand that feeds them. Every time i walked by the tank they would start churning at the surface, and at feeding times they devoured all of the food that i gave them. At that stage they were getting a fingerling food (from our project partners at Jim’s Online Fish Shop) at 4% of their body weight per day. That worked out to approximately 1/4 cup food, three times / day. Continue reading

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It’s Alive (and green)!

The acclimation of both the main tanks and the fry tanks is going well. We added approx 5 lbs of fresh chicken manure to the main tanks (in a mesh bag) which brought the ammonia and phosphate levels up from … Continue reading

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Fish Fry (that’s a baby fish, not a taco filling… yet)

The fish are due to arrive in 3 weeks. 1500 baby tilapia fry. They will weigh approx 1/2 gram each and be about 1 inch long. The biggest challenge to raising Tilapia in the Pacific Northwest will be maintaining warm … Continue reading

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Aquaponics: Part II

Aquaculture system plan view

The recirculating aquaculture system (RAS) at Aprovecho was designed mainly to raise as many tilapia as possible while keeping external inputs to a minimum. Some RAS systems balance hydroponic vegetable production with fish production (Aquaponics). Some of those systems can … Continue reading

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Aquaponics: Part I

Aquaculture

Try to think about the last time you were strolling through a grocery store and you began to feel that slight chill that creeps out from the refrigerated meat and seafood cases and into your bones as you peruse the … Continue reading

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