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This system is designed to grow fish, vegetables and duckweed.
The unit features a 1000 litre fish rectangular fish tank. It also has 2 x 585 litre fibreglass flood and drain gravel grow beds, a 250 litre fingerling tank and another 585 litre duckweed tank.
The fingerling tank is supported on top of the fish tank and is intended to extend the productive capacity of the whole system by allowing me to rear fingerlings at the same time that I'm growing out a batch of fish in the main tank.
It features an innovative tidal arrangement where nutrient rich water is pumped up to the two flood and drain gravel grow beds. As the beds fill, the water level in the fish tank and the duckweed pond drop simultaneously.
Once the grow beds fill to a predetermined level, the float switch shuts off the pump and the water drains back into the fish tank. As the level in the fish tank rises, so does the level of the duckweed tank.
This action imitates the ebb and flow of a tidal estuary.
This unit is designed to produce in excess of 60kg of freshwater fish per year. It will also produce many kilograms of clean, fresh vegetables and herbs.
The duckweed tank will assist in the management of water quality and provides high quality plant protein for the fish.
The fingerling tank is supported on top of the fish tank and is intended to extend the productive capacity of the whole system by allowing me to rear fingerlings at the same time that I'm growing out a batch of fish in the main tank.
It features an innovative tidal arrangement where nutrient rich water is pumped up to the two flood and drain gravel grow beds. As the beds fill, the water level in the fish tank and the duckweed pond drop simultaneously.
Once the grow beds fill to a predetermined level, the float switch shuts off the pump and the water drains back into the fish tank. As the level in the fish tank rises, so does the level of the duckweed tank.
This action imitates the ebb and flow of a tidal estuary.
This unit is designed to produce in excess of 60kg of freshwater fish per year. It will also produce many kilograms of clean, fresh vegetables and herbs.
The duckweed tank will assist in the management of water quality and provides high quality plant protein for the fish.
The new system is capable of supporting a variety of other growing systems so we will, over the coming weeks, attach several satellite pots and a small NFT salad farm.
