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should i use fertilizers in my aquaponics system?
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Author:  cage [ Dec 17th, '12, 23:59 ]
Post subject:  should i use fertilizers in my aquaponics system?

hi everyone

i have a 3 weeks old small aquaponics setup with tomato plants growing pretty good. im just wondering if i need to add fertilizers because i also have a planted aquarium and im worried the aquatic plants will use most of the nutrients before it gets to my growbed :dontknow:

i looked for seaweed extract around here and the only one i found is Nutri-Kelp. http://www.nutri-tech.com.au/products/l ... owder.html

typical analysis:
Total Nitrogen (as organic N) . . . . . . . . . . . . . . . . . . . . . 1 - 1.5%
Total Phosphorus (as organic P) . . . . . . . . . . . . . . . 0.02 - 0.05%
Total Potassium (as organic salts) . . . . . . . . . . . . . . . . 19 - 21%
Sulphur . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 - 9%
Magnesium . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5% - 0.9%
Calcium. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 - 1.0%
Copper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 6 ppm
Boron . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 - 100 ppm
Iron. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 - 200 ppm
Manganese. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 - 12 ppm
Zinc. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 - 100 ppm
Molybdenum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 5 ppm
Moisture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 - 8%
Crude protein. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 - 8%
Carbohydrates. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 - 50%
Ash. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 - 55%
Alginic acid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 - 20%
Mannitol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 - 7%
Betaines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.1%
Cytokinins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.06%
pH. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9.5
Specific Gravity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.11
Conductivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 mS/cm
Solubility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100%
Appearance: Dark brown/black flakes <2mm
Nutri-Kelp™ Powder

can anyone can tell me if this product is fish safe?

Author:  RupertofOZ [ Dec 18th, '12, 00:59 ]
Post subject:  Re: should i use fertilizers in my aquaponics system?

The zinc content seems quite high...

You could perhaps order Maxicrop from India... http://www.srivinayakatrading.com/bio-s ... op-seaweed

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