I thought I'd start with a Novel and cost effective bio-filter media.
Powered by sunlight, enriched by oxygen from the waterfall, nourished by fish-waste nutrients, the pond is home for a treasure of microscopic creatures.
The solids removal tank in an aquaponics system is designed to remove solid waste from the fish tank before the water passes through the biofilter. The biofilter in a backyard or home aquaponics system is usually a gravel bed.
Again, citing Alexander's Intro to Soil Microbiology, this attribute is not rare since up to one half of soil bacterial isolates tested usually are capable of solubilizing calcium phosphates, and the counts of bacteria solubilizing insoluble inorganic forms of phosphorus may be as high as 10^7 (10 million) per gram of soil. Such bacteria are often especially abundant on root surfaces.
The ancient Aztecs developed chinampas, man-made floating islands, which consisted of rectangular areas of fertile land on lake beds. Aztecs cultivated maize, squash and other plants on the chinampas and fish in the canals surrounding them. The fish waste settled on the bottom of the canals, and the Aztecs collected the waste to use as fertilizer [source: Growfish]. Additionally, countries in the Far East like Thailand and China have long used aquaponic techniques in rice paddies.
From the biofilter, water is pumped to the top of a slanted hydroponic growing area, most often constructed with PVC piping. The typical system uses an inert growing medium, such as porous clay pellets or rockwool, a spun glass wool made of volcanic rock, to hold roots in place while water moves through the system and overflows back into the fish pond.
A handfull of Video clips on the subject
Water pH Impacts Sustainability of Recirculating Aquaponic Systems
Now to other matters
Hot off the PRESS
A practical workshop on how to produce your own organic vegetables and fresh fish in one sustainable, closed-loop system, in your own backyard.
- Title: Sydney Autumn Aquaponics
- When: 2 Apr 2011 - 3 Apr 2011 9:00am - 5:00pm
- Where: Alexandria Park Community Centre - Alexandria
- Category:Aquaponics Workshop
Description of Basic Aquaponics System in Australia. Single grow bed media based systems.
Shawn Cruze, a Metro junior, answered questions about the aquaponics tank — a fish tank with plants growing out of it.