Manganese Deficiency

[Sepp0207]

Hey guys,

i have manganese deficiency in my tank. I sent several water samples to a laboratory. The result was always high levels of iron and nearly no manganese. Any ideas where all the manganese disappears?

I use Tropica Soil and Tropica Premium. I have two big filter filled with pumice. Light ist T5 6x80watt.
3 osram 840 und 3 osram 865.
I have 30-40 ppm co2. Kh ist abaout 0,5 and ph around 5,7.

It ist very strange. I lose nearly all of the manganese in the tank. Can soil absorb more manganese than the other micros? Can pumice absorb manganese? I am thankful for every idea.

Greetings.
Sebastian

 

[aclaar877]

Where did you get your water tested? I, along with at least two others used ICP analysis out of Colorado, and each of us got a reading of 0.00 ppm manganese, and we each had been dosing it. In my case I got 0.06 ppm Fe, and with the ratios I was using, should have had about 0.015 Mn. If you are dosing reasonable levels then you should be OK for Mn.

 

[calvin doss]

I suggest a control sample with only water and fertilizers.