Originally Posted by TheBestOfTimes
Hello, I use this fertilizer for green plants which works very well however I don't know if it is dangerous for fish and shrimps? thx
Data on the label :
* 7% Nitrogen( of which total 2.8% Ammonical Nitrogen, 2.9% Urea Nitrogen and 1.3% Nitric Nitrogen)
* 5% Phospheric Anhydride (P2Os) soluble in water
* 6% Potassium Oxide (K2O) soluble in water
Mixture of water-soluble trace elements: 0.002% Copper(Cu); 0.025% Iron(Fe); 0.014% Manganese(MN); 0.001% Molybdenum(Ma); 0.004% Zinc(Zn) (EDTA Chelated)
If your data is correct, then for every NO3 equivalent of 1 ppm, we have 0.22 ppm PO4, 0.16 ppm K, 0.0008 ppm Fe, 0.0005 ppm Mn, 0 ppm B, 0.0001 ppm Zn, 0.00003 ppm Mo, 0.00006 ppm Cu.
Planted aquarium usual daily dose is 1 ppm of NO3, 0.1 – 0.2 ppm PO4, 1.33 ppm K, 0.0500 ppm Fe, 0.0286 ppm Mn, 0.0186 ppm B, 0.0200 ppm Zn, 0.00086 ppm Mo, 0.00142 ppm Cu.
So, if we were to dose to the needed 1 ppm of NO3 a day, we would have deficiencies in K and all of the trace elements. The trace element ratios are not bad, except missing B, but it has only 1/60 of the needed concentrations.