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trace mixes
In search for alternative trace element mixes, I collected in the
past months data on some products. I thought that posting a summary in
here could be of benefit to others. This list is not exhaustive and
contains only products that I could find that disclose their quantitative
makeup on the label or elsewhere (web site). The quantity listed is the
ratio of the given element to Fe. Ratios below 0.01 are not listed. Products
include the original mixes described in the PMDD articles (1,2,3,4), commercial
preparations specifically designed for aquariums (5,6,7), and cheapo
products mainly designed for gardening (8,9,10,11). I used # 7 for about
6 mo. Then, for the past 8 mo. I've been using # 10, enriched with H3BO3
and MnSO4. Both work fine.
-Ivo Busko
Baltimore, MD
Product code in table:
1 - Original Sears/Conlin PMDD
2 - Revised PMDD
3 - Microplex
4 - Plantex CSM
5 - Tropica Master Grow
6 - Seachem Flourish
7 - Two Little Fishes Flora San
8 - Ironite
9 - Dragon Liquid Iron
10 - Fertilome Liquid Iron
11 - Hi-Yield Liquid Iron
Elem. Product
1 2 3 4 5 6 7 8 9 10 11
N 3.05 0.22
K 30. 11.2 <0.10 0.17
Mg 2.0 1.35 0.21 5.57 0.19 0.22 0.08
S 11.2 14.4 0.23 1.57 1.1 0.65 0.80
B 0.19 0.18 0.13 0.06 0.23
Mn 0.29 0.29 1.0 0.29 0.57 0.01 0.63 0.01 0.04 0.05 0.10
Zn 0.06 0.06 0.38 0.06 0.03 0.29 0.10 0.08 0.05 0.10
Cu 0.01 0.01 0.38 0.01 0.09 0.02 0.04 0.02 0.05
Mo 0.09 0.03 0.01 0.46 0.01 0.01
Co 0.01 0.03
Cl 2.12 0.26
Na 1.33
Ca 0.31 0.56