What is mechanical filter?
It removes solid wastes such as uneaten feed, fish waste and debris from the water.
What is biological filter?
It breaks down toxic ammonia and nitrite into less harmful nitrate through beneficial bacteria.
Name and operation.
Drum filter. Waste water is led into the drum and passes through the screen, leaving solids trapped against the screen.
3 locations to install filter in a farm.
Inlet, outlet, recirculating system.
3 unit process of a recirculating system
Mechanical filter, biological filter, aeration/oxygenator
2 benefits of square tank.
Increase capacity, round tank waste space,
3 types of tank material.
Glass-reinforced plastic, Plastic (polyethylene), Fibreglass, Concrete, Steel
3 requirement for biological filter.
large specific surface areas, difficult to clog, proper contact between the water and the surface of the medium, easy to clean
Name and operation.
Removal of particles when water is forced to flow through a layer of a sand of various sizes and depths.
Method to overcome pH drop in RAS filtration system.
Crushed oyster shell, dolomite [CaMg(CO3)2 ], coral, sodium bicarbonate (NaHCO3), sodium carbonate
Benefits of round tank.
Water movement in circular, easy cleaning, no dead zone, fish swim in circular patterns
The best color tank.
Blue Tanks (Light or Dark) - Mimics natural aquatic environments.
