Nutrients for Hydro/Aquaponic Culture?
 

Growing a couple orchids with fish, and was wondering if my aquarium plant fertilizer would do the trick (since they're proven not to harm my fauna)? Have 2 bottles (macro & micro).

Breakdown:

Macro (Seachem. Flourish Nitrogen)
Total Nitrogen (N)
1.5%
Soluble Potash (K2O)
2%

Micro (Seachem. Flourish):
Total Nitrogen
0.07%
Available Phosphate ( P2O5)
0.01%
Soluble Potash
0.37%
Calcium (Ca)
0.14%
Magnesium (Mg)
0.11%
Sulfur (S)
0.2773%
Boron (B)
0.009%
Chlorine (Cl)
1.15%
Cobalt (Co)
0.0004%
Copper (Cu)
0.0001%
Iron (Fe)
0.32%
Manganese (Mn)
0.0118%
Molybdenum (Mo)
0.0009%
Sodium (Na)
0.13%
Zinc (Zn)
0.0007%

You shouldn't need to supplement any nutrients in aquaponics. The fish are usually heavily stocked and they do it.

Here's a link you may find helpful:
backyardaquaponics.com

They do it right down in Oz.

Cheers.
Jim

I thought the fish mainly just excreted ammonia & nitrates. What about micro nutrients?

The micros come in the fish food. If your concerned you could always start with micros and reduce the dosage over time.

Cheers.
Jim