Marine Aquaculture Chris Haynes

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Presentation transcript:

Marine Aquaculture Chris Haynes Live Rock Aquaculture Marine Aquaculture Chris Haynes

What is Live Rock? Rock that is “alive” with organisms. Rock itself isnt alive Used in saltwater aquaria. Reef tanks or FOWLR tanks. Named for where it came from.

3 kinds Dead Rock- Rock that has no living organisms attached Base Rock- Has some coralline growth Live Rock- has more growth on it, Coralline alga, corals, polyps. etc

Why is Live Rock needed? Provides the necessary jumpstart Medium for nitrifying bacteria Denitrifying bacteria Great biological filter Huge amount of surface area/ very porous Made of calcareous skeletons

Why is Live Rock needed? Great at stabilizing PH Is a buffer by releasing calcium carbonate Great substrate to affix corals Decorative Hosts multitude of organisms

Culture Harvested directly Aquaculture projects- suspended in water column for as little as 8 months up to 5 years Little work Seeding

Harvest by hand Damages pre-existing reef structure Hammer to break off chunks of rock Banned in Florida Other countries starting to shift towards aquaculture

Aquaculture Suspended in water column by rafts Let sit on bottom Rock is left up to 5 years before harvest Allows time for colonies of growth Only maintenance is picking off unwanted algae Special seeding facilities – Walt Smith Fiji

6 months 1 year 18 months 2 years

Curing It’s not ready yet Still have to remove dead matter from transport Container to completely cover rock Saltwater, thermometer at 76 degrees, powerhead Scrub all dead matter off rock and let it cure Frequent siphoning/water changes Could take a few days to a month When water stops smelling you can put into aquarium

Hitchhikers Can be a bad thing Unwanted bristleworms Mantis shrimp Snails Algae Sponges Aiptasia