Swiete slowa Jaro
Teraz zobaczcie wplyw chelatow przy takich parametrach,jak badal Marcel
oraz opis.
What's on the picture:
1) 0.9 ppm Fe-gluconate
2) 0.9 ppm Fe-EDTA
3) 0.9 ppm Fe-DTPA
4) 0.75 ppm Fe-DTPA + 0.15 ppm Fe-EDDHMA
5) 0.13 ppm (Fe-gluconate + Fe-EDTA + Fe-DTPA + Fe-EDDHMA) = 1/7 of the full dose
Tank's parameters:
- Temperature 82-84°F (28-29°C)
- pH 6.35 to 6.45, bicarbonates 61 ppm HCO3, carbonate alkalinity 2.8°dKH (1 mM/L) => 35-45 ppm CO2
- total alkalinity 3.6°dKH
- nutrient content: 90 ppm NO3, 60 ppm K, 9 ppm PO4, 25 ppm Ca, 9 ppm Mg, 0.9 ppm Fe (+ other trace elements)
- total hardness 5.6°dGH (1 mM/L)
- source water = RO/DI water (3 µS/cm)
- conductivity after adding minerals: ~250 µS/cm
- light intensity: 100 µmol PAR (bottom), 200 µmol PAR (water surface)
Zwroc uwage na to z kad bierze sie ilosc CO2
oraz wlasnie zobaczcie inne parametry NO3,PO4,K -prowadzony zbiornik dla celow badawczych
oraz krotka adnotacja:
Note: The only tank where the iron did not precipitated was the tank no.3 (Fe-DTPA). I was surprised that even in the tank with Fe-DTPA and Fe-EDDHMA combination of chelates the iron precipitated the next day after the addition of micronutrients. Most precipitates are in the first tank (Fe-gluconate). The higher the pH, temperature, irradiation (light intensity) and Fe, PO4(-2) or OH(-) concentration, the faster the reaction. Here I use quite high temperature (82-84°C), very high iron levels (0.9 ppm) and very high PO4 levels (9 ppm), so under normal conditions the results may be different.
oraz kolejny dokladniejszy opis danej rosliny z zdjec.
The Pogostemon erectus in the 5th tank is another experiment, so it's there just for a comparison.
PS: After 5 days the Fe-DTPA chelate was still OK, and the iron did not precipitated.
Four days increase of Pogostemon in the four tanks:
Tank #1 (Fe-gluconate): 1.5 cm (initial height of Pogostemon: 15.7 cm, final height of Pogostemon: 17.2 cm)
Tank #2 (Fe-EDTA): 1.0 cm (initial height of Pogostemon: 15.9 cm, final height of Pogostemon: 16.9 cm)
Tank #3 (Fe-DTPA): 1.9 cm (initial height of Pogostemon: 14.3 cm, final height of Pogostemon: 16.2 cm)
Tank #4 (Fe-DTPA + Fe-EDDHMA): 1.8 cm (initial height of Pogostemon: 16.9 cm, final height of Pogostemon: 18.7 cm)
I had to end this test for now, but later I'll repeat and revise it, as 4 days are too short period for any serious conclusions.
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