Re:Building a Home Aquaponics System: The Basics
by weberc2 on Tuesday December 19, 2017 @03:56PM
(#15964173)
Not sure what you're proposing, but something has to go into the system (fish food or fertilizer) if you're going to be taking things out (food). If the fish are living off of the plants, then you need to feed the plants. If the plants are living off of the fish, then you need to feed the fish. Something something Law of Conservation of Mass and Energy something something.
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Re:Building a Home Aquaponics System: The Basics
by mulmen on Tuesday December 19, 2017 @04:06PM
(#15964250)
Yeah good point, that must be why all ecosystems fail without human intervention.
/s
Re:Building a Home Aquaponics System: The Basics
by jfoucher on Tuesday December 19, 2017 @04:24PM
(#15964437)
In a natural ecosystem, nothing is taken out, whereas in this one, food is supposed to be removed from the system, making inputs necessary.
Re:Building a Home Aquaponics System: The Basics
by bluGill on Tuesday December 19, 2017 @05:13PM
(#15964910)
Sunlight and air are inputs though. Most of what you take our of the system comes from changing H2O and CO2 from the air into a different form using energy from the sun.
There is the potential various micro nutrients, and minerals. However the vast majority of what the system needs is air and sunlight.
Re:Building a Home Aquaponics System: The Basics
by weberc2 on Tuesday December 19, 2017 @05:36PM
(#15965085)
Right, but nutrients and minerals are still being regularly removed from the system--they need to be put back in order for the system to function. Their mass relative to the mass of other inputs doesn't change the calculus.